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.

Gabapentin is Widely Used for Neuropathic Pain and Postherpetic Neuralgia

Postherpetic neuralgia is a painful condition that affects the nerve fibers and skin. It is a complication of shingles, and shingles is a complication of chicken pox.

If the pain caused by shingles continues after the bout of shingles is over, it is known as post-herpetic neuralgia (PHN). It is estimated that about 1 in 5  patients with shingles will go on to have PHN.
Neuralgia is neuropathic pain that occurs along the course of a nerve. It tends to happen when an irritation or damage to a nerve alters its neurological structure or function.
The sensation may be of intense burning or stabbing, and it may feel as if it is shooting along the course of the affected nerve.
Neuropathic pain comes from inside the nervous system. It is not caused by an outside stimulus, such as an injury. People often refer to it as a pinched nerve, or trapped nerve. The nerve itself sends pain messages because it is either faulty or irritated.

Symptoms of Postherpetic Neuralgia

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After the signs of shingles have gone, nerve pain may remain.

Symptoms are usually limited to the area of skin where the shingles outbreak first occurred and may include:

  • occasional sharp burning, shooting, jabbing pain
  • constant burning, throbbing, or aching pain
  • extreme sensitivity to touch
  • extreme sensitivity to temperature change
  • itching
  • numbness
  • headaches

In rare cases, if the nerve also controls muscle movement, there may be muscle weakness or paralysis.

Drug Treatments for Postherpetic Neuralgia

[PHN can follow shingles]
Postherpetic neuralgia can cause severe pain in people who have had shingles.

Painkillers: These may include tramadol (Ultram) or oxycodone (OxyContin). There is a small risk of dependency.
Anticonvulsants: The pain of PHN can be lessened with anticonvulsants, because they are effective at calming nerve impulses and stabilizing abnormal electrical activity in the nervous system caused by injured nerves. Gabapentin, or Neurontin, and pregabalin, also known as Lyrica, are commonly prescribed to treat this type of pain.
Steroids: A corticosteroid medication can be injected into the area around the spinal cord. Steroids should not be used until the shingles pustular skin rash has completely disappeared.
Lidocaine skin patches: Lidocaine is a common local anesthetic and antiarrhythmic drug. Applied to the skin, it can relieve itching, burning, and pain from inflammation. The patches can be cut to fit the affected area.
Antidepressants: These affect key brain chemicals, such as serotonin and norepinephrine, which influence how the body interprets pain. Examples of drugs that inhibit the reuptake of serotonin or norepinephrine are tricyclic antidepressants, such as amitriptyline, desipramine (Norpramin), nortriptyline (Pamelor), and duloxetine (Cymbalta).
Gabapentin for neuropathic pain has been found to be very effective when used correctly. Neuropathic pain refers to nerve pain and can be highly debilitating and affect the sufferer’s quality of life significantly. It occurs most commonly in patients with diabetes and after a herpes infection such as shingles. Gabapentin for neuropathic pain is available in most countries by prescription only and may be known by different trade names in different countries, according to manufacturer.
Neuropathic pain, often referred to as postherpetic neuralgia when occurring after a herpes zoster (shingles) infection, occurs due to damage caused to the nerves during the infection. This may result in various symptoms including burning pain, sensitivity to light touch or clothes, itching or numbness and may last for months to years. Treatment is often difficult and may include the use of analgesics, tricyclic antidepressants and antiepileptic drugs, like gabapentin.
Gabapentin is most commonly used to treat some types of epilepsy. It is not fully understood how gabapentin for neuropathic pain works but many studies have shown it to be effective for this indication. Due to the difficulty often experienced in trying to control neuropathic pain, the treating doctor may try different medications from different classes until pain control is achieved. In some cases this may entail the use of numerous medications together.

Treatment for Postherpetic neuralgia

Postherpetic neuralgia is a nerve disease occurs after an attack of herpes zoster infection. Herpes zoster or ‘shingles’ is a viral infection which affects the skin, especially sides of the chest, caused by varicella zoster virus. This is the same virus which causes chicken pox in children.
After an episode of herpes, the virus remains dormant in the nerve tissues of the body. This virus may become active when the immunity of the individual reduces or during convalescence after a major illness, resulting in blisters on the skin, known as shingles. It is accompanied with a rash which disappears without major consequences in about two to four weeks. Around 50% of individuals with shingles go on to develop post herpetic neuralgia (PHN) or after-shingles pain.
The neuralgia begins when the herpetic eruptions begin to heal. The pain appears usually in the affected dermatone or the affected nerve course and results in severe pain in the region which has the same nerve supply. The pain is a drawing, pricking type of intense pain, sometimes accompanied with burning sensation of the skin. The pain lasts from a few weeks to few months, rarely years.
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 Causes

      • Severe rash within three days of shingles infection
      • A study shows that, 65% of patients were women
      • The chances of developing PHN, increases when the shingles occurs in persons over 50 years.
      • The incidence of herpes zoster is up to 15 times higher in HIV-infected patients than in uninfected persons, and as many as 25 percent of patients with Hodgkin’s lymphoma develop herpes zoster.
      • Blacks are one fourth as likely as whites to develop this condition.
      • Site of HZ involvement
        • Lower risk – Jaw, neck, sacral, and lumbar
        • Moderate risk – Thoracic
        • Highest risk – Trigeminal (especially ophthalmic division), brachial plexus.

Signs and symptoms:

    • A pain that continues for 3 months or more, after the healing of shingles, is defined as PHN.
    • PHN pain may be burning, aching, itching and sharp and the pain can be constant or it can come and go
    • The skin which was affected with blisters, may show scarring
    • The involved dermatome may show altered sensations, either hypersensitivity or reduced sensitivity.
    • In rare cases, where if the nerves involved also control muscle movement, the patient might also experience muscle weakness, tremor or paralysis

Postherpetic Neuralgia Treatment:

The conventional treatment is directed at pain control while waiting for the condition to resolve.  Pain therapy may include multiple interventions, such as topical medications, over-the-counter analgesics, tricyclic antidepressants,  anticonvulsants and a number of non medical modalities. Occasionally, narcotics may be required.
When it comes to treating postherpetic neuralgia, you may need to take a combination of medications to effectively manage your pain and other PHN symptoms. No single treatment plan is right for everyone—what medications you take will depend on your PHN symptoms.
While symptoms differ from person to person, for most people, PHN does improve over time. Researchers found that more than half of all patients with PHN stop experiencing pain within one year.1
Fortunately, during that period of intense pain and other symptoms, there are certain medications that you can take to significantly help control postherpetic neuralgia symptoms.
Before trying a prescription medication, your doctor will most likely want you to try an over-the counter (OTC) analgesic (painkiller) medication, such as acetaminophen or non-steroidal anti-inflammatory drugs (NSAIDs). These medications can help relieve pain and other PHN symptoms.
Tylenol is an example of acetaminophen, and Advil is an example of an NSAID you can take to help treat PHN.
Another OTC medication you may want to try for PHN is capsaicin cream. This cream—made from hot chili pepper seeds—is applied to the affected skin, and it can be helpful for reducing PHN-related pain. But this cream can be painful, so talk to your doctor about how much you should apply.
If these medications aren’t strong enough to treat your PHN symptoms, your doctor may suggest some of the prescription medications below to treat your postherpetic neuralgia.

    • Tricyclic antidepressants, such as amitriptyline (Elavil), nortriptyline (Pamelor), and desipramine (Norpramin) are effective at treating postherpetic neuralgia pain. Other classes of antidepressant are also helpful. All classes of antidepressant take a few weeks to start working.
    • Anticonvulsants, developed to control seizures, can help reduce the pain of PHN. These include gabapentin (Neurontin), carbamazepine (Tegretol) and pregabalin (Lyrica). Gabapentin enacarbil (Horizant) and gabapentin (Gralise) are approved by the FDA for the treatment of PHN in adults.
    • Anti-viral drugs valacyclovir and acyclovir are also becoming medications of choice for treating postherpetic neuralgia.
    • Lidocaine Patches for Postherpetic Neuralgia. Lidocaine patches are FDA-approved to treat PHN. The medication in the patch—lidocaine—can penetrate your skin and go to the nerves that are sending the pain signals. A benefit of lidocaine patches is that they don’t numb the skin.
    • Prescription capsaicin patches. These patches contain a very high concentration of the chili pepper extract capsaicin. The capsaicin patch Qutenza is applied in a doctor’s office for one hour every three months.

If you have severe pain and other medications don’t work for you, your doctor may want you to try an opioid.  Tramadol (eg, Ultram) is an example of a relatively weak opioid that can be used to help you manage PHN. Your doctor may have you try a weaker opioid first.  Opioids, such as morphine (MS Contin), oxycodone (OxyContin), and hydrocodone (Vidocin), are also used to treat moderate to severe pain of postherpetic neuralgia.

Homoeopathic Medicine:

Mezereum – For Postherpetic Neuralgia with Intense Burning

Mezereum is rated among the best medicines for postherpetic neuralgia. It is the best-suited prescription when postherpetic neuralgic pains are violent and attended with marked burning.  Mezereum is the most helpful among medicines for postherpetic neuralgia in postherpetic pains located in the face. The pain in the face may get worse while eating.
Warmth brings relief. Mezereum is also helpful during active herpes zoster where eruptions are present. The key symptoms to look out for before prescribing Mezereum during herpes zoster infection are violently itching vesicles with shining red areola and intense burning.

2. Ranunculus Bulbosus – For Pains coming in Paroxysms

Another of the prominently indicated medicines for postherpetic neuralgia is Ranunculus Bulbosus. It is indicated for sharp, shooting, postherpetic neuralgic pains that come in paroxysms.
It is also one of the top listed medicines for intercostal neuralgia following herpetic infection. Ranunculus Bulbosus is also indicated for herpes zoster when the vesicles eruptions are bluish in colour. The eruptions are attended with itching and burning symptoms which worsen on contact.

3. Rhus Tox – One of the best Medicines for Postherpetic Neuralgia

Rhus Tox also figures on the list of highly effective medicines for postherpetic neuralgia. It is one of the best medicines for postherpetic neuralgia where the pains are attended with marked restlessness. The skin is sensitive to cold air in such cases. In herpes zoster, Rhus Tox is the most preferred among medicines when the vesicles are yellowish with itching and stinging.