What is Migraine and How to Treat it ?

What are migraines?

Migraines are a recurring type of headache. They cause moderate to severe pain that is throbbing or pulsing. The pain is often on one side of your head. You may also have other symptoms, such as nausea and weakness. You may be sensitive to light and sound.

What causes migraines?

Researchers believe that migraine has a genetic cause. There are also a number of factors that can trigger a migraine. These factors vary from person to person, and they include

  • Stress
  • Anxiety
  • Hormonal changes in women
  • Bright or flashing lights
  • Loud noises
  • Strong smells
  • Medicines
  • Too much or not enough sleep
  • Sudden changes in weather or environment
  • Overexertion (too much physical activity)
  • Tobacco
  • Caffeine or caffeine withdrawal
  • Skipped meals
  • Medication overuse (taking medicine for migraines too often)

Some people have found that certain foods or ingredients can trigger headaches, especially when they are combined with other triggers. These foods and ingredients include

  • Alcohol
  • Chocolate
  • Aged cheeses
  • Monosodium glutamate (MSG)
  • Some fruits and nuts
  • Fermented or pickled goods
  • Yeast
  • Cured or processed meats

Who is at risk for migraines?

About 12% of Americans get migraines. They can affect anyone, but you are more likely to have them if you

  • Are a woman. Women are three times more likely than men to get migraines.
  • Have a family history of migraines. Most people with migraines have family members who have migraines.
  • Have other medical conditions, such as depression, anxiety, bipolar disorder, sleep disorders, and epilepsy.

What are the symptoms of migraines?

There are four different phases of migraines. You may not always go through every phase each time you have a migraine.

  • Prodome. This phase starts up to 24 hours before you get the migraine. You have early signs and symptoms, such as food cravings, unexplained mood changes, uncontrollable yawning, fluid retention, and increased urination.
  • Aura. If you have this phase, you might see flashing or bright lights or zig-zag lines. You may have muscle weakness or feel like you are being touched or grabbed. An aura can happen just before or during a migraine.
  • Headache. A migraine usually starts gradually and then becomes more severe. It typically causes throbbing or pulsing pain, which is often on one side of your head. But sometimes you can have a migraine without a headache. Other migraine symptoms may include
    • Increased sensitivity to light, noise, and odors
    • Nausea and vomiting
    • Worsened pain when you move, cough, or sneeze
  • Postdrome (following the headache). You may feel exhausted, weak, and confused after a migraine. This can last up to a day.

Migraines are more common in the morning; people often wake up with them. Some people have migraines at predictable times, such as before menstruation or on weekends following a stressful week of work.

What is the Triggers of Migraine ?

Some common migraine triggers include:

  • Hormone changes. Many women notice that they have headaches around their period, while they’re pregnant, or when they’re ovulating. Symptoms may also be tied to menopause, birth control that uses hormones, or hormone replacement therapy.
  • Stress. When you’re stressed, your brain releases chemicals that can cause blood vessel changes that might lead to a migraine.
  • Foods. Some foods and drinks, such as aged cheese, alcohol, and food additives like nitrates (in pepperoni, hot dogs, and lunchmeats) and monosodium glutamate (MSG), may be responsible in some people.
  • Skipping meals
  • Caffeine. Getting too much or not getting as much as you’re used to can cause headaches. Caffeine itself can be a treatment for acute migraine attacks.
  • Changes in weather. Storm fronts, changes in barometric pressure, strong winds, or changes in altitude can all trigger a migraine.
  • Senses. Loud noises, bright lights, and strong smells can set off a migraine.
  • Medications. Vasodilators, which widen your blood vessels, can trigger them.
  • Physical activity. This includes exercise and sex.
  • Tobacco
  • Changes to your sleep. You might get headaches when you sleep too much or not enough.

What is Migraine Types ?

Migraine can be classified into subtypes, according to the headache classification committee of the International Headache Society:

  • Migraine without aura is a recurrent headache attack of 4 to 72 hours; typically unilateral in location, pulsating in quality, moderate to severe in intensity, aggravated by physical activity, and associated with nausea and light and sound sensitivity (photophobia and phonophobia).
  • Migraine with aura has recurrent fully reversible attacks, lasting minutes, typically one or more of these unilateral symptoms: visual, sensory, speech and language, motor, brainstem, and retinal, usually followed by headache and migraine symptoms.
  • Chronic migraine is a headache that occurs on 15 or more days in a month for more than three months and has migraine features on at least eight or more days in a month.
  • Complications of migraine

    • Status migrainosus is a debilitating migraine attack that lasts more than 72 hours.
    • Persistent aura without infarction is an aura that persists for more than one week without evidence of infarction on neuroimaging.
    • Migrainous infarction is one or more aura symptoms associated with brain ischemia on neuroimaging during a typical migraine attack.
    • Migraine aura-triggered seizure occurs during an attack of migraine with aura, and a seizure is triggered.
  • Probable migraine is a symptomatic migraine attack that lacks one of the features required to fulfill criteria for one of the above and does not meet the criteria for another type of headache.

Episodic syndromes that may be associated with migraine

  • Recurrent gastrointestinal disturbances are recurrent attacks of abdominal pain and discomfort, nausea, and vomiting that may be associated with migraines.
  • Benign paroxysmal vertigo has brief recurrent attacks of vertigo.
  • Benign paroxysmal torticollis is recurrent episodes of head tilt to one side.

How are migraines diagnosed?

For migraines without aura, diagnostic criteria include:

  1. 5+ attacks fulfilling the other criteria
  2. Headache attacks that last from 4 to 72 hours (untreated or unsuccessfully treated)
  3. Headache consisting of at least 2 of the following characteristics: unilateral location, pulsating quality, moderate/severe pain intensity, and aggravation by or causing avoidance of routine physical activity (i.e., walking or climbing stairs)
  4. During the headache, the presence of at least one of the following: nausea/vomiting, photophobia/phonophobia
  5. Not better accounted for with another ICHD-3 diagnosis

For migraines with aura, diagnostic criteria include:

  1. Two or more attacks fulfilling the other criteria
  2. At least one of the following completely reversible symptoms of aura: visual, sensory, motor, speech or language, brainstem, retinal
  3. At a minimum of three of the following six characteristics: 1+ one aura symptoms spread gradually over greater than equal to 5 minutes, 2+ aura symptoms occur in succession, each aura symptom lasts 5-60 minutes, 1+ aura symptom is unilateral, 1+ aura symptom is positive, the aura is accompanied or followed within 60 minutes by the headache
  4. Not better accounted for with another ICHD-3 diagnosis

For chronic migraine, diagnostic criteria include:

  1. Headache (migraine-like or tension-type-like) on greater than or equal to 15 days/month for greater than three months and also fulfilling criteria B and C
  2. Occurring in a patient who has experienced at least five attacks fulfilling criteria B through D for migraine presenting without aura and/or criteria B and C for migraine that presents with aura
  3. Occurs greater than or equal to 8 days/month for greater than three months, fulfilling any of the following
  4. Criteria C and D for migraine without aura
  5. Criteria B and C for migraine with aura
  6. Believed by the patient to be migraine at the point of onset and relieved by a triptan or ergot derivative
  7. Not better accounted for with another ICHD-3 diagnosis

How are migraines treated?

There is no cure for migraines. Treatment focuses on relieving symptoms and preventing additional attacks.

There are different types of medicines to relieve symptoms. They include triptan drugs, ergotamine drugs, and pain relievers. The sooner you take the medicine, the more effective it is.

There are also other things you can do to feel better:

  • Resting with your eyes closed in a quiet, darkened room
  • Placing a cool cloth or ice pack on your forehead
  • Drinking fluids

There are some lifestyle changes you can make to prevent migraines:

  • Stress management strategies, such as exercise, relaxation techniques, and biofeedback, may reduce the number and severity of migraines. Biofeedback uses electronic devices to teach you to control certain body functions, such as your heartbeat, blood pressure, and muscle tension.
  • Make a log of what seems to trigger your migraines. You can learn what you need to avoid, such as certain foods and medicines. It also help you figure out what you should do, such as establishing a consistent sleep schedule and eating regular meals.
  • Hormone therapy may help some women whose migraines seem to be linked to their menstrual cycle
  • If you have obesity, losing weight may also be helpful

If you have frequent or severe migraines, you may need to take medicines to prevent further attacks. Talk with your health care provider about which drug would be right for you.

Certain natural treatments, such as riboflavin (vitamin B2) and coenzyme Q10, may help prevent migraines. If your magnesium level is low, you can try taking magnesium. There is also an herb, butterbur, which some people take to prevent migraines. But butterbur may not be safe for long-term use. Always check with your health care provider before taking any supplements.

What is the Medicines for Migraine ?

1) Abortive Treatments

1.Anti-inflammatories (NSAIDs and Acetaminophen)

Non-steroidal anti-inflammatory drugs (NSAIDs) are mainstay choices and have the greatest strength of evidence. Ibuprofen, naproxen sodium, acetylsalicylic acid (ASA), and diclofenac potassium all have double-blinded randomized controlled trial evidence for efficacy that has analysis in systematic reviews.

NSAIDs include aspirin, naproxen, ibuprofen, tolfenamic acid, diclofenac, piroxicam, ketoprofen, and ketorolac.

Acetaminophen and the combination of acetaminophen/aspirin/caffeine have also demonstrated consistent evidence of efficacy for acute migraine.

Mechanism of Action

NSAIDs inhibit prostaglandin synthesis. NSAIDs reversibly inhibit cyclooxygenase (COX) 1 and 2. The NSAIDs that inhibit prostaglandin E2 synthesis are effective in treating acute migraine attacks. Aspirin acts as an irreversible COX I and 2 inhibitor.

Although not entirely understood, the current thought is that acetaminophen affects central processes, such as positive effects on the serotonergic descending inhibitory pathways. It also may affect opioidergic systems, eicosanoid systems, and the nitric oxide-containing pathways.

Administration

  • Aspirin: Peroral (PO) tablet with standard dosages of 325 mg, 500 mg, and 400 mg effervescent; treatment dosage of up to 1000 mg
  • Naproxen: PO tablet with standard dosages of 220 mg, 275 mg, 500 mg, and 550 mg; treatment dosage of 550 to 1100 mg per day in divided dosages
  • Ibuprofen: PO tablet with standard dosages of 200 mg, 400 mg, 600 mg, and 800 mg; treatment dosage of 200 to 800 mg
  • Tolfenamic acid: PO tablet with standard and treatment dosage of 200 mg
  • Diclofenac: PO tablet with standard dosages of 50 mg; treatment dosage of 50 to 100 mg
  • Piroxicam: PO capsules with standard dosages of 10 mg, 20 mg; treatment dosage of 40 mg
  • Ketorolac: Parenteral dosing with standard dosages of 30 to 60 mg; treatment dose of 30 to 60 mg

Adverse Effects

The most common adverse effects of NSAIDs are GI symptoms, which include dyspepsia, abdominal burning or discomfort, and diarrhea. Other less common symptoms include easy bruising, pruritus, rash, hypersensitivity response in asthmatics, gastritis, esophagitis, GI bleeding, renal failure, hepatic impairment, and cardiovascular events.

Besides allergic reactions, no serious side effects have been observed with acetaminophen when taken in appropriate dosages. After higher doses or prolonged duration of taking acetaminophen, hepatotoxicity, and nephrotoxicity (less common) can occur.

Contraindications

In addition to NSAID hypersensitivity reaction, another agreed-upon absolute contraindication is for those in the preoperative period of coronary artery bypass graft surgery. Warnings include those with significant cardiovascular disease, renal insufficiency, gastrointestinal erosive disorders, bleeding diathesis, and those taking warfarin.

For acetaminophen, contraindications include hypersensitivity reactions and severe active liver disease.

2.Triptans

Seven triptans have approval from the FDA and marketed for acute treatment of migraines They include sumatriptan, eletriptan, naratriptan, zolmitriptan, rizatriptan, frovatriptan, and almotriptan. Triptans are significantly more expensive than NSAIDs as a class. They are often therapeutic choices if other therapies have failed (i.e., NSAID, acetaminophen) or if the headache is severe.

Mechanism of Action

Triptans are serotonin-receptor agonists with a high affinity for 5-HT1B and 5-HT1D receptors, and variable affinity for 5-HT1F receptors. The proposed mechanism of action involves binding postsynaptic 5-HT1B receptors on the smooth muscle cells of blood vessels and presynaptic 5-HT1D receptors on the trigeminal nerve terminals and dorsal horn neurons.

Administration

Sumatriptan: PO tablet with standard dosages of 100, 50, and 25 mg; also available parenteral (though IV contraindicated because of its potential to cause vasospasm)

Eletriptan: PO tablet with standard dosages of 40 and 20 mg; contraindicated in patients with renal failure, arrhythmias, and heart failure

Naratriptan: PO tablet with standard dosages of 2.5 and 1 mg; has a sulfa group

Zolmitriptan: PO tablet with standard dosages of 5 and 2.5 mg; also available as wafer and nasal spray; wafer contains phenylalanine

Rizatriptan: PO tablet with standard dosages of 10 and 5 mg; also available as a wafer; wafer contains phenylalanine

Frovatriptan: PO tablet with a standard dose of 2.5 mg

Almotriptan: PO tablet with standard dosages of 12.5 and 6.25 mg; has a sulfa group

Adverse Effects

The most common adverse effects of triptans include pressure or tightness sensations of the chest, throat, or jaw; limb heaviness; myalgias; and fatigue. Less common adverse effects include flushing, paresthesias, dizziness, asthenia, and mental cloudiness.

Contraindications

Triptans have associations with increased blood pressure, and providers should avoid giving them to patients with uncontrolled hypertension, ischemic cardiac syndrome, cerebrovascular syndrome, or peripheral vascular condition. Patients should also not take them within 24 hours of administration, another triptan, or ergot-type medication. Triptans are also contraindicated in hemiplegic or basilar migraine and patients with hepatic impairment.

3.Antiemetics

When a migraine is associated with nausea/vomiting, an antiemetic is an excellent choice for treatment. The administration of an antiemetic is often in combination with either an NSAID or triptan, but can be used as monotherapy. Two common antiemetics used include metoclopramide and prochlorperazine. Metoclopramide has the greatest evidence for efficacy in migraine and is associated with a less likelihood of extrapyramidal side effects than prochlorperazine, but both are good initial options. Domperidone, promethazine, chlorpromazine are other examples of antiemetics.

Mechanism of Action

Metoclopramide is a benzamide that antagonizes the D2 receptor at lower doses and 5HT-3 at higher doses.

Prochlorperazine and chlorpromazine are dopamine antagonists (D2 receptor), providing antiemetic and migraine relief effects.

Administration

Metoclopramide: PO and parenteral formulations available; treatment dosages of 10 – 20 mg

Prochlorperazine: PO, parenteral and rectal formulations available; treatment dosage of 10 mg (PO and parenteral) and 25 mg (rectal)

Chlorpromazine: PO and parenteral formulations available; treatment dosage of 0.1 mg/kg up to 25 mg

Adverse Effects

Most antiemetics used for migraines are associated with a risk of QT interval prolongation and torsades de pointes. Metoclopramide, prochlorperazine, and chlorpromazine can cause dystonia, tardive dyskinesia, and akathisia (collectively known as extrapyramidal symptoms). Coadministration with diphenhydramine can prevent these symptoms. Other side effects are uncommon and can include headaches and allergic reactions such as anaphylaxis.

Contraindications

Considering the dopamine antagonists, contraindications include known hypersensitivity reactions and know extrapyramidal symptom reactions.

4.Ergotamines

Triptans have largely replaced ergotamines, as studies have shown more efficacy for triptans. Dihydroergotamine has demonstrated some efficacy, while the effectiveness of ergotamine is uncertain. In one systematic review, dihydroergotamine was not as effective as triptans, but when combined with an antiemetic, was found to be as effective as ketorolac, opiates, or valproate.  Dihydroergotamine may be a useful option when patients do not respond to other medications, including triptans.

Mechanism of Action

Ergotamines, like triptans, are potent 5-HT 1b/1d receptor agonists. They involve constricting the theorized pain-producing intracranial extracerebral blood vessels at the 5-HT1B receptors and inhibit the trigeminal neurotransmission at both peripheral and central 5-HT1D receptors. They also interact with other serotonin, adrenergic, and dopamine receptors. They cause constriction of peripheral and cranial blood vessels.

Administration

Dihydroergotamine: Parenteral dosing with dosages between 0.5 – 1 mg; intranasal formulation available (4 mg)

Adverse Effects

The most common side effects include nausea and vomiting. Administer with an antiemetic. Dysphoria is another observed side effect (central 5-HT1A agonism).

Contraindications

Similar to triptans, those with cardiovascular disease should avoid the use of ergotamines. The peripheral vascular constrictive effects of ergotamines are more pronounced than triptans since triptans do not have activity at adrenergic and 5-HT2A receptors.

2)Preventive Treatments

1.Beta-Blockers

Propranolol, timolol, bisoprolol, metoprolol, atenolol, and nadolol have shown positive outcomes in migraine prevention studies. Beta-blockers with intrinsic sympathomimetic activity (such as acebutolol, alprenolol, oxprenolol, and pindolol) are not effective for migraine prevention.

Administration

Propranolol: PO immediate-release and long-acting formulations available; dose for immediate release ranging from 80 to 240 mg/day divided every 6 to 8 hours; dose for long-acting release is 80 to 240 mg/day

Timolol: PO formulation with doses of 20-30 mg/day

Bisoprolol: PO formulation with doses of 2.5 to 10 mg/day

Metoprolol: PO formulation with doses of 50 to 200 mg/day twice daily

Atenolol: PO formulation with doses of 50 to 200 mg/day

Nadolol: PO formulation with doses of 40 to 240 mg/day

Mechanism of Action

The mechanisms of action of beta-blockers in migraine prevention are not entirely understood. The thinking is that the beta-1 mediated effects could inhibit noradrenaline release and tyrosine hydroxylase activity, accounting for prophylactic action. Other possibilities include serotonergic blockade, inhibiting thalamic activity, and nitrous oxide blockade.

Adverse Effects

Common adverse effects include drowsiness, fatigue, dizziness, and weakness. Other adverse effects include weight gain, symptomatic hypotension, nausea/vomiting, diarrhea, feelings of coldness in extremities, and dry skin/mouth/eyes, bradycardia, bronchospasm, dyspnea, alopecia, visual disturbances, insomnia, sexual dysfunction, and metabolism alterations.

Contraindications

Asthma and chronic obstructive pulmonary disease have been classic contraindications because of the potential for beta-blockers to cause bronchospasm. Cocaine intoxication is another contraindication because of the risk of coronary vasospasm. This contraindication is subject to debate.

2.Antiepileptics

Several antiepileptic drugs (AEDs) have been studied and proven effective for migraine prevention, with topiramate and valproate having the best evidence.

Administration

Topiramate: PO formulation with doses of 25-200 mg/day

Valproate: PO formulation of extended (once daily) and delayed (2 divided doses daily) releases are available; doses of 500-1500 mg/day

Mechanism of Action

Similar to the beta-blockers, it is unclear what effect antiepileptics have on migraine prevention. For topiramate, it blocks multiple channels such as voltage-dependent sodium and calcium channels. It also has been shown to inhibit glutamate-mediated excitatory neurotransmission, facilitate GABA-A-mediated inhibition, inhibit carbonic anhydrase activity, and reduce CGRP secretion from trigeminal neurons. For valproate, similar to topiramate, multiple mechanisms may contribute to migraine prevention. They include enhancing GABAergic inhibition, blocking excitatory ion channels, and downregulating the expression of CGRP in brain tissue.

Adverse Effects

Common adverse effects of topiramate include nausea/vomiting, diarrhea, somnolence, dizziness, weight loss, paresthesias, fatigue, nasopharyngitis, and weight loss. Other adverse effects include tachypnea, palpitations, bleeding, mood changes, dysuria, hematuria, and increased frequency of urination.

Common adverse effects of valproate include nausea/vomiting, diarrhea, abdominal pain, headache, drowsiness, hair loss, tremors, dizziness, visual disturbances, tinnitus, changes in appetite, and weight gain. Other adverse effects include confusion, severe drowsiness, bleeding, and inflammation.

Contraindications

Hypersensitivity to topiramate is a contraindication to the drug.

Contraindications to valproate usage include hepatic dysfunction, mitochondrial disorders, hypersensitivity, urea cycle disorders, and pregnancy.

3.Calcium Channel Blockers

Flunarizine is the best studied of the calcium channel blockers for migraine prevention (however not available in the U.S.). Verapamil and cinnarizine are other meds that are off-label for migraine prevention. Verapamil is probably the most commonly used calcium channel blocker for migraine prevention in the U.S.

Administration

Flunarizine: PO formulation of 5 to 10 mg/day

Verapamil: PO formulation of 120 to 480 mg/day in 3 divided doses

Mechanism of Action

Similar to the other migraine preventive treatments, the role of calcium channel blockers in migraine prevention is unclear. Flunarizine is a nonselective calcium antagonist. In addition to calcium channel activity, it blocks voltage-gated sodium channels, acts as a D2 dopamine antagonist, and increases leptin levels.

Adverse Effects

Adverse effects include constipation, cardiac conduction defects at higher doses, dizziness, constipation, headache, nausea/vomiting, flushing, edema, drowsiness, and hypotension. Lesser common adverse effects include sexual dysfunction, gingival overgrowth, and liver dysfunction.

Contraindications

Contraindications include hypersensitivity reactions, acute coronary syndrome, hypertrophic obstructive cardiomyopathy, severe stenotic heart valve defects, and cardiac conduction disorders.

4.Antidepressants

The most studied antidepressants that have shown efficacy for migraine prevention are the tricyclic antidepressant (TCA) amitriptyline and the selective serotonin reuptake inhibitor (SSRI) fluoxetine. Other TCAs and the serotonin-norepinephrine reuptake inhibitor venlafaxine have been studied and may be effective for migraine prevention, though the evidence is short.

Administration

Amitriptyline: PO formulation of 10 to 150 mg/day

Fluoxetine: PO formulation of 20 to 40 mg/day

Mechanism of Action

Similar to other migraine prevention medications, the role of antidepressants in migraine prevention is unclear. Amitriptyline is a mixed serotonin-norepinephrine reuptake inhibitor and has the following mechanisms: alpha2-adrenoceptor agonist, sodium channel blockade contributing to antimuscarinic and antihistamine effects, and cortical spreading depression.

Fluoxetine is a selective serotonin reuptake inhibitor leading to increased levels of serotonin. Noradrenaline reuptake inhibition occurs at higher doses.

Adverse Effects

Adverse effects of tricyclic antidepressants include antimuscarinic effects such as dry mouth, blurry vision, constipation, urinary retention, increased body temperature, and excessive sweating. Other side effects include morning sedation, tachycardia, vivid dreams, weight gain, hypotension, sexual dysfunction, confusion, and QT prolongation.

Adverse effects of selective serotonin reuptake inhibitors include sexual dysfunction, drowsiness, weight gain, insomnia, dizziness, headache, dry mouth, blurry vision, nausea, rash, tremors, and constipation. SSRIs can also prolong the QT interval.

Contraindications

For TCAs, coadministration with monoamine oxidase inhibitors (MAOI) is contraindicated due to the increased risk of serotonin syndrome. Hypersensitivity reactions and coadministration of cisapride are also contraindicated.

For SSRIs, coadministration of medications that significantly increase the risk of serotonin syndrome is contraindicated. These medications include monoamine oxidase inhibitors, linezolid, and methylene blue. Other contraindications include hypersensitivity reactions and coadministration with pimozide or thioridazine.

3) Other and Future Considerations

1.Triptans with NSAIDs

Research has shown the combined use of a triptan and an NSAID to be more effective than using either drug class alone for acute migraine treatment. The best-studied combination is sumatriptan plus naproxen PO. The two classes of drugs having different mechanisms of action are thought to provide better relief. Multiple studies have used sumatriptan 85 mg plus naproxen 500 mg and sumatriptan 50 mg plus naproxen 500 mg. In a meta-analysis review article, no significant difference was found between using the sumatriptan 85 mg – naproxen combo and the sumatriptan 50 mg – naproxen combo.

2.Lasmiditan

Lasmiditan is a serotonin 5-HT1F receptor agonist that has been shown effective for acute migraine treatment. The utility of this medication is that it lacks vasoconstrictor effects such as those seen in triptans, and thus offers those with cardiovascular disease an alternative to triptans. Studies have used up to lasmiditan 200 mg PO with good effect; however, there were frequent reports of adverse effects. In a recent phase, three multicenter, double-blind, randomized controlled studies, between 25.4% to 39.0% of patients receiving lasmiditan reported adverse effects. The most common adverse effects were dizziness, somnolence, and paresthesias.

3.Calcitonin Gene-Related Peptide (CGRP)

CGRP monoclonal antibodies (mAbs) are the only class of currently used preventives explicitly developed for the treatment of migraines. The current thinking is that CGRP mediates the vasodilatory component of neurogenic inflammation, as CGRP is a widely distributed vasodilator. The CGRP mAbs target either the CGRP molecule itself or the CGRP receptor. In network meta-analysis, the CGRP mAbs seemed to be as effective as other preventive treatments, but have fewer side effects. Long-term data on safety, however, is limited.  These medications include erenumab, fremanezumab, and galcanezumab.

Complementary and alternative treatments

Some people get relief with therapies they use in addition to or instead of traditional medical treatment. These are called complementary or alternative treatments. For migraine, they include:

  • Biofeedback. This helps you take note of stressful situations that could trigger symptoms. If the headache begins slowly, biofeedback can stop the attack before it becomes full-blown.
  • Cognitive behavioral therapy (CBT). A specialist can teach you how actions and thoughts affect how you sense pain.
  • Supplements. Research has found that some vitamins, minerals, and herbs can prevent or treat migraines. These include riboflavin, coenzyme Q10, and melatonin. Butterbur may head off migraines, but it can also affect your liver enzymes.
  • Body work. Physical treatments like chiropractic, massage, acupressure, acupuncture, and craniosacral therapy might ease headache symptoms.

Talk to your doctor before trying any complementary or alternative treatments.

How are migraines treated?

Migraine headaches are chronic. They can’t be cured, but they can be managed and possibly improved. There are two main treatment approaches that use medications: abortive and preventive.

  • Abortive medications are most effective when you use them at the first sign of a migraine. Take them while the pain is mild. By possibly stopping the headache process, abortive medications help stop or decrease your migraine symptoms, including pain, nausea, light sensitivity, etc. Some abortive medications work by constricting your blood vessels, bringing them back to normal and relieving the throbbing pain.
  • Preventive (prophylactic) medications may be prescribed when your headaches are severe, occur more than four times a month and are significantly interfering with your normal activities. Preventive medications reduce the frequency and severity of the headaches. Medications are generally taken on a regular, daily basis to help prevent migraines.

What medications are used to relieve migraine pain?

Over-the-counter medications are effective for some people with mild to moderate migraines. The main ingredients in pain relieving medications are ibuprofen, aspirin, acetaminophen, naproxen and caffeine.

Three over-the-counter products approved by the Food and Drug Administration for migraine headaches are:

  • Excedrin® Migraine.
  • Advil® Migraine.
  • Motrin® Migraine Pain.

Be cautious when taking over-the-counter pain relieving medications. Sometimes overusing them can cause analgesic-rebound headaches or a dependency problem. If you’re taking any over-the-counter pain medications more than two to three times a week, report that to your healthcare provider. They may suggest prescription medications that may be more effective.

Prescription drugs for migraine headaches include:

Triptan class of drugs (these are abortives):

  • Sumatriptan.
  • Zolmitriptan.
  • Naratriptan.

Calcium channel blockers:

  • Verapamil.

Calcitonin gene-related (CGRP) monoclonal antibodies:

  • Erenumab.
  • Fremanezumab.
  • Galcanezumab.
  • Eptinezumab.

Beta blockers:

  • Atenolol.
  • Propranolol.
  • Nadolol.

Antidepressants:

  • Amitriptyline.
  • Nortriptyline.
  • Zanaflex
  • Doxepin.
  • Venlafaxine.
  • Duloxetine.
  • Flexeril
  • Robaxin

Antiseizure drugs:

  • Valproic acid.
  • Topiramate.
  • Gabapentin (Neurontin )

Other:

  • Steroids.
  • Phenothiazines.
  • Corticosteroids.

Your healthcare provider might recommend vitamins, minerals, or herbs, including:

Drugs to relieve migraine pain come in a variety of formulations including pills, tablets, injections, suppositories and nasal sprays. You and your healthcare provider will discuss the specific medication, combination of medications and formulations to best meet your unique headache pain.

Drugs to relieve nausea are also prescribed, if needed.

All medications should be used under the direction of a headache specialist or healthcare provider familiar with migraine therapy. As with any medication, it’s important to carefully follow the label instructions and your healthcare provider’s advice.

Alternative migraine management methods, also known as home remedies, include:

  • Resting in a dark, quiet, cool room.
  • Applying a cold compress or washcloth to your forehead or behind your neck. (Some people prefer heat.)
  • Massaging your scalp.
  • Yoga.
  • Applying pressure to your temples in a circular motion.
  • Keeping yourself in a calm state. Meditating.
  • Biofeedback.

What is Migraine and How to Prevent and Treat Migraine ?

Neurontin® (Gabapentin ) is another Epilepsy medication that is being used as an effective preventive or prophylactic Migraine regiment. As Migraine and Epilepsy are Related diseases, this is actually a sound approach. Neurontin® is an antiepileptic drug, prescribed as adjunctive therapy in the treatment of partial seizures with and without secondary generalization in patients over 12 years of age with epilepsy. Neurontin is also indicated as adjunctive therapy in the treatment of partial seizures in pediatric patients age 3-12 years.. It is typically added to the treatment regimen when other drugs fail to fully control a patient’s attacks.

Gabapentin is quite effective in the treatment of cluster and chronic daily headaches. Most people achieve the reduction of headache frequency within 1-2 weeks.

 

In one study, eight patients with intractable cluster headache were headache-free at a maximum of 8 days after starting gabapentin at the daily dose of 900 mg4. Patients with the episodic type remained headache-free at 3 months after discontinuation of therapy. Patients with chronic cluster were headache-free during the 4 months after initiation of treatment while taking this medication.

The longest period of being continuously headache free on gabapentin was 18 months.

Gabapentin is used for migraine prevention and treatment. It reduces the frequency of headaches, pain intensity, and the use of symptomatic medications. Gabapentin is a good preventive therapy for migraines refractory to other medications.

The double-blind study of 143 patients evaluated gabapentin for migraine prophylaxis. After 3 months the patients taking gabapentin had a reduction of the migraine frequency by 1.5 migraines per month (or by 35.7%) compared with a reduction of 0.6 migraines per month for the placebo group. Also, gabapentin reduced the headache frequency by 50% or greater in 45% patients compared with only 16% patients on placebo.

Gabapentin dosage: 1,200 mg to 2,400 mg per day divided in three doses.

Gabapentin is an effective prophylactic agent for patients with migraine. In addition, gabapentin appears generally well tolerated with mild to moderate somnolence and dizziness.

http://www.ncbi.nlm.nih.gov/pubmed/11251695

What is Migraine ?

A migraine is a headache that can cause severe throbbing pain or a pulsing sensation, usually on one side of the head. It’s often accompanied by nausea, vomiting, and extreme sensitivity to light and sound. Migraine attacks can last for hours to days, and the pain can be so severe that it interferes with your daily activities.

For some people, a warning symptom known as an aura occurs before or with the headache. An aura can include visual disturbances, such as flashes of light or blind spots, or other disturbances, such as tingling on one side of the face or in an arm or leg and difficulty speaking.

Medications can help prevent some migraines and make them less painful. The right medicines, combined with self-help remedies and lifestyle changes, might help.

Types of migraines

People can also experience different types of migraines. Here are the most common:

  1. Migraine without aura. This is the most common type of migraine, accounting for 70% to 90% of all migraines experienced. Many people will have one of these at some point in their lives. This migraine has no warning; it just comes on suddenly and starts at phase 3 (attack).

  2. Migraine with aura. About 25% of migraine sufferers have this kind of migraine. While they may not go through the prodrome phase, they do experience the aura phase. This can be helpful for some, as it gives you a warning and can help you gauge when to take acute treatments.

  3. Cluster migraine. This type of migraine happens more frequently to men, but we’re not sure how many people experience it. Cluster migraines don’t last as long as other types of migraines, but they can be much more painful and happen multiple times in a day. These migraines tend to come and go, happening for weeks or months at a time and then not returning for months or years. They are also the most difficult type of migraine to treat.

What is the Symptoms of Migraine ?

Migraines, which affect children and teenagers as well as adults, can progress through four stages: prodrome, aura, attack and post-drome. Not everyone who has migraines goes through all stages.

Prodrome

One or two days before a migraine, you might notice subtle changes that warn of an upcoming migraine, including:

  • Constipation
  • Mood changes, from depression to euphoria
  • Food cravings
  • Neck stiffness
  • Increased urination
  • Fluid retention
  • Frequent yawning

Aura

For some people, an aura might occur before or during migraines. Auras are reversible symptoms of the nervous system. They’re usually visual but can also include other disturbances. Each symptom usually begins gradually, builds up over several minutes and can last up to 60 minutes.

Examples of migraine auras include:

  • Visual phenomena, such as seeing various shapes, bright spots or flashes of light
  • Vision loss
  • Pins and needles sensations in an arm or leg
  • Weakness or numbness in the face or one side of the body
  • Difficulty speaking

Attack

A migraine usually lasts from 4 to 72 hours if untreated. How often migraines occur varies from person to person. Migraines might occur rarely or strike several times a month.

During a migraine, you might have:

  • Pain usually on one side of your head, but often on both sides
  • Pain that throbs or pulses
  • Sensitivity to light, sound, and sometimes smell and touch
  • Nausea and vomiting

What causes migraines?

Researchers believe that migraine has a genetic cause. There are also a number of factors that can trigger a migraine. These factors vary from person to person, and they include

  • Stress
  • Anxiety
  • Hormonal changes in women
  • Bright or flashing lights
  • Loud noises
  • Strong smells
  • Medicines
  • Too much or not enough sleep
  • Sudden changes in weather or environment
  • Overexertion (too much physical activity)
  • Tobacco
  • Caffeine or caffeine withdrawal
  • Skipped meals
  • Medication overuse (taking medicine for migraines too often)

Some people have found that certain foods or ingredients can trigger headaches, especially when they are combined with other triggers. These foods and ingredients include

  • Alcohol
  • Chocolate
  • Aged cheeses
  • Monosodium glutamate (MSG)
  • Some fruits and nuts
  • Fermented or pickled goods
  • Yeast
  • Cured or processed meats

Who is at risk for migraines?

About 12% of Americans get migraines. They can affect anyone, but you are more likely to have them if you

  • Are a woman. Women are three times more likely than men to get migraines.
  • Have a family history of migraines. Most people with migraines have family members who have migraines.
  • Have other medical conditions, such as depression, anxiety, bipolar disorder, sleep disorders, and epilepsy.

How are migraines diagnosed?

To make a diagnosis, your health care provider will

  • Take your medical history
  • Ask about your symptoms
  • Do a physical and neurological exam

An important part of diagnosing migraines is to rule out other medical conditions which could be causing the symptoms. So you may also have blood tests, an MRI or CT scan, or other tests.

How are migraines treated?

There is no cure for migraines. Treatment focuses on relieving symptoms and preventing additional attacks.

There are different types of medicines to relieve symptoms. They include triptan drugs, ergotamine drugs, and pain relievers. The sooner you take the medicine, the more effective it is.

There are also other things you can do to feel better:

  • Resting with your eyes closed in a quiet, darkened room
  • Placing a cool cloth or ice pack on your forehead
  • Drinking fluids

There are some lifestyle changes you can make to prevent migraines:

  • Stress management strategies, such as exercise, relaxation techniques, and biofeedback, may reduce the number and severity of migraines. Biofeedback uses electronic devices to teach you to control certain body functions, such as your heartbeat, blood pressure, and muscle tension.
  • Make a log of what seems to trigger your migraines. You can learn what you need to avoid, such as certain foods and medicines. It also help you figure out what you should do, such as establishing a consistent sleep schedule and eating regular meals.
  • Hormone therapy may help some women whose migraines seem to be linked to their menstrual cycle
  • If you have obesity, losing weight may also be helpful

If you have frequent or severe migraines, you may need to take medicines to prevent further attacks. Talk with your health care provider about which drug would be right for you.

Certain natural treatments, such as riboflavin (vitamin B2) and coenzyme Q10, may help prevent migraines. If your magnesium level is low, you can try taking magnesium. There is also an herb, butterbur, which some people take to prevent migraines. But butterbur may not be safe for long-term use. Always check with your health care provider before taking any supplements.

Which Drugs can Prevent Migraine ?

It’s the best situation: Stop a migraine before it starts. To do that, your doctor may consider these types of prescription drugs.Anti-seizure drugs. Valproate and topiramate (Topamax, Qudexy XR, others) might help if you have less frequent migraines, but can cause side effects such as dizziness, weight changes, nausea and more. These medications are not recommended for pregnant women or women trying to get pregnant.Anticonvulsants. These are medicines that prevent or reduce seizures. Your doctor may recommend topiramate (Qudexy XR, Topamax) or valproic acid (Depakene, Depakote) to prevent headaches. Anti-seizure drugs could make you sleepy. You may also find it harder to focus.Beta-blockers. These relax your blood vessels. They’re often prescribed to control blood pressure. For migraines, your doctor may suggest atenolol (Tenormin), metoprolol (Lopressor, Toprol XL), nadolol (Corgard), propranolol (Inderal, Inderal LA, Inderal XL, InnoPran), or timolol. Side effects include feeling depressed and having problems during sex.

Botulinum toxin (Botox). A doctor can inject small amounts around your face and scalp every 3 months to keep migraines from happening. This treatment is approved only for people who have headaches at least 15 days a month. The more often you have migraines, the better Botox seems to help.

Calcium-channel blockers. These include diltiazem (Cardizem, Cartia, Tiazac) and verapamil (Calan, Covera HS, Verelan). They ease the narrowing of your blood vessels and are also given to treat heart disease. Side effects can include constipation and low blood pressure.

Antidepressants. Your doctor may prescribe tricyclic antidepressants (TCAs) like amitriptyline (Elavil) or nortriptyline (Aventyl, Pamelor). Some people gain weight and feel very tired when they take these. TCAs can also cause severe problems if you have heart disease or are pregnant. Research suggests that selective serotonin and norepinephrine reuptake inhibitors (SNRIs) such as duloxetine (Cymbalta) and venlafaxine (Effexor XR) may also help prevent migraines.CGRP inhibitors. CGRP (calcitonin gene-related peptide) is a molecule involved in causing migraine pain. CGRP inhibitors are a new class of drugs that block the effects of CGRP. Atogepant (Qulipta), eptinezumab (Vyepti), erenumab (Aimovig), fremanezumab (Ajovy), and galcanezumab (Emgality) are approved to prevent migraine attacks. You give yourself a shot once a month with a pen-like device. Mild pain and redness at the injection site are the most common side effects. The long-term safety of CGRPs is unknown.NSAIDs and triptans. If you’re prone to migraines around your period, your doctor may have you take nonsteroidal anti-inflammatory drugs (NSAIDs), like naproxen (Anaprox, Naprosyn) or certain triptans, typically used to stop migraines once they’ve started, each month. You may be able to stave off an attack if you start a few days before your menstrual cycle starts and then stop a few days after your flow begins.Blood pressure-lowering medications. These include beta blockers such as propranolol (Inderal, InnoPran XL, others) and metoprolol tartrate (Lopressor). Calcium channel blockers such as verapamil (Verelan) can be helpful in preventing migraines with aura.

CGRP monoclonal antibodies.Erenumab-aooe (Aimovig), fremanezumab-vfrm (Ajovy), galcanezumab-gnlm (Emgality), and eptinezumab-jjmr (Vyepti) are newer drugs approved by the Food and Drug Administration to treat migraines. They’re given monthly or quarterly by injection. The most common side effect is a reaction at the injection site.

Which Supplements Can Prevent Migraine ?

Supplements may refer to minerals, vitamins, and other substances. People typically take these to promote their overall health or fill nutritional voids in their diet.

Although some people use supplements to help manage migraine, there is limited evidence to suggest that they are helpful for this purpose.

In an older study from 2009Trusted Source, researchers did note that supplements including one or more of the following may help people manage migraine:

However, to prevent potential interactions, a person should talk with a doctor before taking a new supplement — especially if they are already taking other supplements or medications.

How to Treat Migraine ?

During an attack

Most people find that sleeping or lying in a darkened room is the best thing to do when having a migraine attack.

Others find that eating something helps, or they start to feel better once they have been sick.

Painkillers

Many people who have migraines find that over-the-counter painkillers, such as paracetamol, aspirin and ibuprofen, can help to reduce their symptoms.

They tend to be most effective if taken at the first signs of a migraine attack, as this gives them time to absorb into your bloodstream and ease your symptoms.

It’s not advisable to wait until the headache worsens before taking painkillers, as it’s often too late for the medicine to work.

Tablets you dissolve in a glass of water (soluble painkillers) are a good alternative because they’re absorbed quickly by your body.

If you cannot swallow painkillers because of nausea or vomiting, suppositories may be a better option. These are capsules that are inserted into the bottom.

CautionsWhen taking over-the-counter painkillers, always make sure you read the instructions on the packaging and follow the dosage recommendations.

Children under 16 should not take aspirin unless it’s under the guidance of a healthcare professional.

Aspirin and ibuprofen are also not recommended for adults who have a history of stomach problems, such as stomach ulcers, liver problems or kidney problems.

Taking any form of painkiller frequently can make migraines worse. This is sometimes called a medication overuse headache or painkiller headache.

Speak to a GP if you find yourself needing to use painkillers repeatedly or over-the-counter painkillers are not effective.

They may prescribe stronger painkillers or recommend using painkillers along with triptans.

If they suspect the frequent use of painkillers may be contributing your headaches, they may recommended that you stop using them.

Triptans

If ordinary painkillers are not helping to relieve your migraine symptoms, you should make an appointment to see a GP.

They may recommend taking painkillers in addition to a type of medicine called a triptan, and possibly anti-sickness medicine.

Triptan medicines are a specific painkiller for migraine headaches. They’re thought to work by reversing the changes in the brain that may cause migraine headaches.

They cause the blood vessels around the brain to narrow (contract). This reverses the widening of blood vessels that’s believed to be part of the migraine process.

Triptans are available as tablets, injections and nasal sprays.

Common side effects of triptans include:

  • warm sensations
  • tightness
  • tingling
  • flushing
  • feelings of heaviness in the face, limbs or chest

Some people also experience feeling sick, a dry mouth and drowsiness.

These side effects are usually mild and improve on their own.

As with other painkillers, taking too many triptans can lead to a medication overuse headache.

Your GP will usually recommend having a follow-up appointment once you have finished your first course of treatment with triptans.

This is so you can discuss their effectiveness and whether you had any side effects.

If the medicine was helpful, treatment will usually be continued.

If they were not effective or caused unpleasant side effects, your GP may try prescribing a different type of triptan as how people respond to this medicine can be highly variable.

Anti-sickness medicines

Anti-sickness medicines, known as anti-emetics, can successfully treat migraine in some people even if you do not experience feeling or being sick.

These are prescribed by a GP, and can be taken alongside painkillers and triptans.

As with painkillers, anti-sickness medicines work better if taken as soon as your migraine symptoms begin.

They usually come in the form of a tablet, but are also available as a suppository.

Side effects of anti-emetics include drowsiness and diarrhoea.

Combination medicines

You can buy a number of combination medicines for migraine without a prescription at your local pharmacy.

These medicines contain both painkillers and anti-sickness medicines.

If you’re not sure which one is best for you, ask your pharmacist.

It can also be very effective to combine a triptan with another painkiller, such as ibuprofen.

Many people find combination medicines convenient.

But the dose of painkillers or anti-sickness medicine may not be high enough to relieve your symptoms.

If this is the case, it may be better to take painkillers and anti-sickness medicines separately. This allows you to easily control the doses of each.

Acupuncture

If medicines are unsuitable or do not help to prevent migraines, you can try acupuncture.

Some GP surgeries offer acupuncture, but most do not, so you may have to pay for it privately.

Evidence suggests a course of up to 10 sessions over a 5- to 8-week period may be beneficial.

 

What is Gabapentin and What It Is Used For ?

What is Gabapentin ?

Gabapentin capsules, tablets, and oral solution are used along with other medications to help control certain types of seizures in people who have epilepsy. Gabapentin capsules, tablets, and oral solution are also used to relieve the pain of postherpetic neuralgia (PHN; the burning, stabbing pain or aches that may last for months or years after an attack of shingles). Gabapentin extended-release tablets (Horizant) are used to treat restless legs syndrome (RLS; a condition that causes discomfort in the legs and a strong urge to move the legs, especially at night and when sitting or lying down). Gabapentin is in a class of medications called anticonvulsants. Gabapentin treats seizures by decreasing abnormal excitement in the brain. Gabapentin relieves the pain of PHN by changing the way the body senses pain. It is not known exactly how gabapentin works to treat restless legs syndrome.

Gabapentin belongs to a class of drugs known as anticonvulsants, used to help control seizures in the treatment of epilepsy. Neurontin will only be able to control seizures for as long as you take it. It can’t cure epilepsy. The following step after being diagnosed is to work with your doctor in choosing the best treatment options for you. Gabapentin capsules, tablets, and oral solution are used to help control certain types of seizures in people who have epilepsy.

What is Gabapentin Used for ?

Gabapentin capsules, tablets, and oral solution are also used to relieve the pain of postherpetic neuralgia (PHN; the burning, stabbing pain or aches that may last for months or years after an attack of shingles). Gabapentin extended-release tablets (Horizant) are used to treat restless legs syndrome (RLS; a condition that causes discomfort in the legs and a strong urge to move the legs, especially at night and when sitting or lying down). Gabapentin is in a class of medications called anticonvulsants.

Gabapentin 800 mg Tab-IVA Gabapentin treats seizures by decreasing abnormal excitement in the brain. Gabapentin relieves the pain of PHN by changing the way the body senses pain. It is not known exactly how gabapentin works to treat restless legs syndrome.

Gabapentin is also sometimes used to relieve the pain of diabetic neuropathy (numbness or tingling due to nerve damage in people who have diabetes), and to treat and prevent hot flashes (sudden strong feelings of heat and sweating) in women who are being treated for breast cancer or who have experienced menopause (”change of life”, the end of monthly menstrual periods). Talk to your doctor about the risks of using this medication for your condition.

Pregabalin (Lyrica), a drug similar to gabapentin, was the first medication approved by the Food and Drug Administration (FDA) to treat fibromyalgia. While gabapentin hasn’t been approved by the FDA for the treatment of fibromyalgia, some doctors may prescribe it off-label for such use.

Gabapentin and pregabalin were originally approved to treat certain types of epilepsy and nerve pain. Both drugs work by limiting the release of pain-communicating chemicals by nerve cells in the brain and spinal cord. The most common side effects of both drugs are dizziness and drowsiness.

It is also used to control pain associated with shingles and has been evaluated for pain conditions, including migraine, as its pain-modulating properties may regulate the perception of pain.

Anticonvulsant drugs, such as gabapentin, are becoming increasingly popular for migraine prevention.

Gabapentin for Depression, Mania and Anxiety

Right now, Gabapentin is approved in the United States to treat seizures. There are not a lot of comprehensive studies that look at Gabapentin as a way to treat anxiety, mood disorders or tardive dyskinesia. Even though there are studies in the works, what experts know about Gabapentin for the purpose of controlling anxiety and mood disorders and tardive dyskinesia mostly comes from faulty case reports. There have been double-blind studies done, but they have not proved that Gabapentin works as a mood stabilizer.

Many experts don’t recommend the use of Gabapentin for mood disorders. There is more data from people who have hard-to-treat bipolar disorder than unipolar depression, although some people with unipolar disorder have gotten good results from Gabapentin. In time, it can be proven that Gabapentin can be used to treat a variety of mood disorders.

What is Off Label Usage of Gabapentin ?

Anticonvulsant drugs, such as gabapentin, are becoming increasingly popular for migraine prevention.

Efficacy of gabapentin in migraine prophylaxis research on a history of migraine episodes for a mean of about 21 years shows that Gabapentin is an effective prophylactic agent for patients with migraine. In addition, gabapentin appears generally well tolerated with mild to moderate somnolence and dizziness.

Gabapentin is generally well tolerated. The main side effects are dizziness and drowsiness. Occasionally there maybe some fluid retention, unsteadiness or G.I upset, mainly diarrhea.

The effective dose of gabapentin varies greatly. Some persons need only 200-300 mg a day whereas others may need 3000 mg or more a day. It may take several weeks to become effective, so it is important to stay on it for an adequate length of time.

Gabapentin has a lot of off-label usage. It is widely used nerve related diseases. Most of them are reviewed by patients and reviewed high.


General speaking, Gabapentin can be off label used to treat Cough, Hot Flashes, Occipital Neuralgia, Trigeminal Neuralgia, Transverse Myelitis,
Alcohol Withdrawal, Pruritus, Bipolar Disorder, Migraine, Anxiety, Postherpetic Neuralgia, Insomnia, Restless Legs Syndrome, Vulvodynia, Benign Essential Tremor, Peripheral Neuropathy, Fibromyalgia, Diabetic Peripheral Neuropathy, Pain, Neuropathic Pain, Reflex Sympathetic Dystrophy Syndrome, Epilepsy, Hiccups, Syringomyelia, Periodic Limb Movement Disorder, Spondylolisthesis, Burning Mouth Syndrome, Pudendal Neuralgia, Small Fiber Neuropathy, Nausea/Vomiting, Chemotherapy Induced.

Gabapentin Can be Used for Migraine Prevention

Neurontin is the trade name for the generic drug gabapentin. It is useful as an anti-epileptic drug and as an analgesic, particularly for pain of the neuropathic or neurogenic type. (pain from irritation or inflammation of nerves). When used for controlling epilepsy, it is usually used in conjunction with another anti-epileptic drug. It is used much more extensively in the medical field to treat pain than it is to treat epilepsy.

How gabapentin works to prevent migraine attacks ?

Gabapentin’s role in migraine prevention isn’t well known.

It’s believed that it may influence electrical activity in the brain through neurotransmitters and block calcium channels. It may also be a factor in reducing excitatory neurotransmitters like glutamate.

Still, more research needs to be done to determine why it works.

Generally, gabapentin isn’t used as a primary therapy for migraine prevention, but as an additional treatment to support other therapies.

The drugs used to prevent migraine attacks are different from drugs that treat an acute attack. Drugs that prevent migraine symptoms, such as gabapentin, must be taken on an ongoing basis to work properly.

The chemical structure of gabapentin is related that of gamma-aminobutyric acid (GABA) which is a neurotransmitter in the brain. The exact mechanism as to how gabapentin controls epilepsy and relieves pain is unknown, but it probably acts like the neurotransmitter GABA.

Animal studies show that gabapentin prevents the development of allodynia (a normally non painful stimulus which is perceived as painful) and hyperalgesia (an exaggerated response to a painful stimulus).

Gabapentin can be very helpful in controlling the pain of trigeminal neuralgia (tic doloreaux), post herpetic neuralgia (the lingering pain after a bout of shingles), the pain of diabetic neuropathy and other neuritic pains such as pain from nerve irritation due spinal arthritis or disc disease and occipital neuralgia. Occasionally it seems to be helpful in controlling migraine and other headaches. It has also been reported to be helpful in controlling the pain of fibromyalgia.

International and domestic studies that have evaluated Neurontin for migraine prevention suggest that it is effective. In a study of 63 patients with migraine (with or without aura), gabapentin significantly reduced migraine frequency and intensity among 30 patients who received it. In this study, adverse events were mild to moderate in severity.

Migraine

Similarly, in a large study, 143 people with migraine received daily doses of Neurontin or placebo for 12 weeks. At the end of 12 weeks, the migraine rate had declined from 4.2 migraines before treatment to 2.7 migraines after treatment in those who received this drug.

This decrease was significantly greater than the decrease from 4.1 migraines to 3.5 migraines among those who received placebo. Of the 56 gabapentin recipients, 46% had at least a 50% reduction in the four-week migraine rate. Drug-related adverse events (sleepiness and dizziness) led to drug withdrawal in 13% of patients in the gabapentin group compared with 7% in the placebo group. The researchers concluded that this medication is an effective and well-tolerated preventive for migraine.

Gabapentin is an effective prophylactic agent for patients with migraine. In addition, gabapentin appears generally well tolerated with mild to moderate somnolence and dizziness.

Gabapentin dosage information for migraine

The dosage for gabapentin for migraine ranges from 300 to 3,600 milligrams (mg) per day, depending on your age and other health factors.

Gabapentin for migraine prevention can be taken with or without food and comes in an extended release tablet, an immediate release tablet, or an oral solution.

Side effects of gabapentin include:

  • vision changes such as blurred vision
  • unusual eye movements
  • ataxia (loss of coordination)
  • swelling in the limbs or feet

It’s important to follow your doctor’s recommendations on dosage and weaning off of the medication if needed. Never take more than is recommended by your doctor, even if you miss a dose.

 

 

 

Efficacy of Gabapentin in Preventing Migraine

In an Research, Patients were started on one 300-mg capsule of gabapentin or matching placebo, and then were titrated weekly from 900 mg/day (end of week 1) to 2400 mg/day (end of week 4) and had to be receiving a stable dose of study medication by the end of the titration period.

At seven participating centers, 143 patients with migraine were randomized in a 2:1 ratio and received either gabapentin (n = 98) or matching placebo (n = 45).  Thirty-three patients (24.1%) discontinued prematurely from the study, including 24 (24.5%) of 98 gabapentin-treated patients and 9 (20.0%) of 45 placebo-treated patients; the majority of patients discontinued due to adverse events (16 [16.3%] of 98 gabapentin-treated patients; 4 [8.9%] of 45 placebo-treated patients).

Patients included in the analysis were evenly balanced for age, sex, race, weight, and height. The majority of these patients were white (80 [92.0%] of 87) and women (72 [82.8%] of 87), with a mean age of approximately 39.4 years and a history of migraine episodes for a mean of about 21 years.

At the end of the 12-week treatment phase, the median 4-week migraine rate was 2.7 for the gabapentin-treated patients maintained on a stable dose of 2400 mg/day and 3.5 for the placebo-treated patients (P =.006), compared with 4.2 and 4.1, respectively, during the baseline period. Additionally, 26 (46.4%) of 56 patients receiving a stable dose of 2400 mg/day gabapentin and 5 (16.1%) of 31 patients receiving placebo showed at least a 50% reduction in the 4-week migraine rate (P =.008).

The average number of days per 4 weeks with migraine was also statistically significant and favored gabapentin (P =.006) during stabilization period 2. The median change in 4-week headache rate was statistically significant as well (P =.013). The most frequently reported adverse events for both treatment groups were asthenia, dizziness, somnolence, and infection. Adverse events determined by the investigator to be associated with study drug resulted in patient withdrawal in 13 (13.3%) of 98 gabapentin-treated patients and 3 (6.7%) of 45 placebo-treated patients.

Somnolence and dizziness accounted for many of the premature withdrawals among those taking gabapentin.

CONCLUSION:

Gabapentin is an effective prophylactic agent for patients with migraine. In addition, gabapentin appears generally well tolerated with mild to moderate somnolence and dizziness.

The Study can be found here http://www.ncbi.nlm.nih.gov/pubmed/11251695