Clinical and scientific evidence supports that proper management of patients with headache should be multimodal including appropriate use of pharmacological and nonpharmacological interventions. Regarding migraine, its treatment is increasingly focused on a personalized approach, ie, the right drug to the right patient at the right dose at the right time.
Nonpharmacological treatments. It is important to acknowledge the convenience of nonpharmacological treatment because these therapies are frequently requested by individuals with headache, particularly in specific situations, such as childhood, pregnancy, and breastfeeding. Nowadays, it is also important to know that there is a wide range of alternative therapies, but they have variable and scarce scientific evidence.
Some evidence supports the use of noninvasive neuromodulatory devices (43), biobehavioral therapy (47), and acupuncture (25), although a study of acupuncture indicated that it is not superior to sham acupuncture (15). Contrary to popular belief, little to no evidence exists for physical therapy, spinal manipulation, and dietary approaches (34). Other therapeutic options, such as melatonin, magnesium, and riboflavin, have limited evidence for their efficacy, and their use in clinical practice is limited (29).
Pharmacological treatment. Due to its high prevalence and socioeconomic burden, the following sections focus on the pharmacological treatment of migraine. Individualized approaches using a combination of novel agents with oral prophylactic drugs or botulinum toxin A, switching between new drugs, and adjusting treatment duration could enhance excellence in practice.
Acute treatment. Acute migraine treatments can be generally categorized into two main categories: (1) migraine-specific agents and (2) nonspecific agents.
Among migraine-specific agents, triptans are a commonly used drug category. There are seven triptans that work mainly as a serotonin 5HT-1B receptor agonist. We advise patients to use a triptan at the start of the headache phase because there is no efficacy evidence if taken during preceding aura. The route of administration should be best tailored to the individual’s migraine attack. For example, for a patient presenting with severe vomiting during headache attack, a nasal spray could be a better option. Moreover, the effect of a triptan depends on its route of administration. Thus, subcutaneous sumatriptan is the fastest one, followed by nasal preparations. In general, most adverse effects of triptans are well tolerated. However, there are cardiovascular safety concerns associated with triptan use due to the presence of 5HT-1B receptors on vascular smooth muscle. Therefore, triptans are generally avoided in people with uncontrolled hypertension and with a history of cardiovascular or cerebrovascular diseases.
If all available triptans fail after an adequate trial period (no or insufficient therapeutic response in at least three consecutive attacks), or their use is contraindicated due to potential cardiovascular risk, a similar category of drug, ditans, could be considered. Ditans exert their effect on a different subtype of serotonin receptor (5-HT1F) and, therefore, limit the extent of vasoconstriction. Currently, lasmiditan is the only ditan approved for acute treatment.
Ubrogepant, atogepant, and rimegepant are the gepants approved for the acute treatment of migraine (23; 33; 32). These medications are small molecules that act as calcitonin gene-related peptide (CGRP) receptor antagonists (02). The gepants and ditans likely offer a comparable alternative to triptans for patients with cardiovascular risk factors (23), and it seems that they do not lead to medication overuse headache. Furthermore, post-hoc analyses reported no differences in efficacy of gepants/ditans between responders and nonresponders to triptans (12).
Dihydroergotamine, an ergots derivative, was previously used as a treatment for migraine. This medication has shown a similar adverse effect with triptans. As for the combination of pills, including ergotamine and caffeine, treatment efficacy is not as high as dihydroergotamine (35).
Besides these migraine-specific treatments, nonspecific agents, such as acetaminophen, nonsteroid anti-inflammatory drugs (NSAIDs), and drug combinations (acetaminophen-aspirin-caffeine), could be tried. Most of these are over-the-counter medications and are commonly used as a first-line acute treatment option.
An antiemetic could be used, even if nausea is not pronounced, to counter gastric stasis and facilitate tablet absorption and pain relief. Among them, prochlorperazine and metoclopramide were more commonly used parenterally.
It is important to note that acute treatment should be limited, on average, to no more than 10 days per month for migraine-specific medications and on no more than 15 days per month for nonspecific medications like NSAIDs or acetaminophen, to reduce the risk of medication overuse.
Another alternative treatment option is nerve blocks. Occipital nerve block, consisting of a local anesthetic and/or corticosteroid, has shown to be an effective treatment for the management of migraines. Occipital nerve block has been reported to reduce migraine pain scores, frequency, and duration (18). Nerve blocks with lidocaine is a suitable option for migraine treatment during pregnancy if it is needed.
Management on medication-overuse headache. Medication-overuse headache is a secondary headache occurring on 10 to 15 or more days per month, developing as a consequence of regular overuse of acute headache medication (simple analgesics and NSAIDs on 15 days or more; or triptans, opioids, and combination analgesics on 10 days or more days per month) for over three months.
Treatment of medication-overuse headache has three components. First, patients need education and counseling to reduce the intake of medication for acute headache attacks. Second, some patients benefit from drug withdrawal (discontinuation of the overused medication). The overused abortive medication should ideally be stopped for at least one month. Finally, preventive drug therapy and nonmedical prevention might be necessary in patients at onset of treatment or in patients who do not respond to the first two steps. The optimal therapeutic approach requires validation in controlled trials (14). Nowadays, there is a lot of controversy as to whether migraine preventatives should be started while there is still ongoing medication overuse.
Preventative treatment. Migraine preventative treatments aim to reduce the frequency and severity of attacks and may help reduce the frequency of analgesic use. It is important to manage patient’s expectations before starting treatment. Prophylactic treatment is recommended for patients adversely affected on greater than or equal to two days per month despite optimized acute therapy (19).
In addition, the choice of a certain preventative treatment is influenced by the guideline’s recommendations for each country, considering type of migraine, patient’s characteristics, and comorbidities.
Oral prophylactics. The agents used can be classified into antiepileptic drugs, beta blockers, antidepressants, calcium channel antagonists, and angiotensin modulators (ACE inhibitors and angiotensin-receptor inhibitors). The general rules of thumb are to start treatment at a low dose, gradually increasing to an initial target dose. If there is no effect and no significant side effects, the dose can be further increased for some drugs. We continue the medication for at least three months to evaluate efficacy. If effective (about a 50% improvement) the drug may be continued for 6 months, although there is some evidence of fewer rebound headaches if continued for 12 months.
OnabotulinumtoxinA. In 2010, OnabotulinumtoxinA was reported effective for the treatment of chronic migraine in the Phase 3 Research Evaluating Migraine Prophylaxis Therapy (PREEMPT) trials (04; 13) and was approved both by the European Medicines Agency and by the U.S. Food and Drug Administration for the prophylaxis of chronic migraine. OnabotulinumtoxinA has not been found effective in episodic migraine or in tension-type headache. There are European and American guidelines on the use of onabotulinumtoxinA in chronic migraine (44; 05).
CGRP pathway targeted treatments. The CGRP mAbs are the first class of preventive medication to specifically target the pathophysiology of migraine. Their efficacy, tolerability, and lack of drug-drug interactions make them ideal for many patients who have been unsuccessfully treated with other preventives (10). Currently, there are four CGRP-mABs placed on the market. Financing conditions are different for each country. One of the approved drugs targets the CGRP receptor (erenumab), whereas three target the CGRP ligand (fremanezumab, galcanezumab, and eptinezumab). Erenumab, galcanezumab and fremanezumab are given by subcutaneous injection monthly, although fremanezumab can also be given quarterly. Eptinezumab is given by intravenous infusion quarterly. They have been found to be effective in episodic and chronic migraine (01).
Another class of CGRP pathway treatment for headache prevention is gepants. Currently, atogepant and rimegepant are both included in this category. These medications have advantages in oral dosing.
Outcomes. Although measuring disability is a key step toward managing it, stratified care-based treatment guidelines, which match the severity of disability to the intensity of therapeutic interventions, may be needed to close the loop between process measures and functional outcomes.