Evidence behind this recommendation.
Selected studies from our library that inform the recommendations on this page. Evidence grade shown when available.
Acupuncture for the prevention of episodic migraine (Cochrane Review)
“Cochrane review by Linde et al. analyzed 22 randomized clinical trials with 4985 patients. Results showed that acupuncture is as effective as prophylactic drugs (topiramate, propranolol, valproate) in reducing the frequency of migraine attacks, with significantly fewer adverse effects. After 6 months, acupuncture maintained superiority over sham treatment.”
Acupuncture for migraine prophylaxis: a randomized controlled trial
“Randomized clinical trial with 249 patients showed that true acupuncture reduced the frequency of migraine attacks by 3.2 days per month compared with 2.1 days in the sham acupuncture group and 1.4 days in the waiting-list group — a statistically significant difference maintained for 24 weeks after the end of treatment.”
What Is Migraine?
Migraine is a primary neurological disease characterized by recurrent attacks of unilateral pulsating headache, of moderate to severe intensity, often accompanied by nausea, vomiting, photophobia, and phonophobia. It is the second leading cause of disability in the world according to the World Health Organization (WHO), affecting approximately 15% of the global population.
The modern pathophysiology of migraine centers on the trigeminovascular system — the interaction between the trigeminal nerve and the meningeal vessels. Activation of the trigeminal ganglion releases vasoactive neuropeptides, especially CGRP (calcitonin gene-related peptide), which promotes meningeal vasodilation, neurogenic inflammation, and sensitization of central nociceptive pathways.
Cortical spreading depression (CSD) is the electrophysiological phenomenon underlying migraine aura: a wave of neuronal depolarization that propagates across the córtex at 3–5 mm/min, followed by suppression of electrical activity. CSD directly activates meningeal trigeminal afferents, connecting the aura to the headache.
MIGRAINE IN NUMBERS
Trigeminovascular System
Activation of the trigeminal ganglion and release of CGRP in the meningeal vessels are the central mechanism of the migraine attack.
Cortical Spreading Depression
Wave of neuronal depolarization in the córtex that generates the aura and activates trigeminal afferents — the trigger of the headache.
Central Sensitization
Recurrent attacks sensitize the neurons of the trigeminal caudal nucleus, making the brain progressively more vulnerable to new attacks.
Why Pharmacological Prophylaxis Is Not Always Sufficient
Pharmacological prophylaxis of migraine includes beta-blockers (propranolol), anticonvulsants (topiramate, sodium valproate), antidepressants (amitriptyline) and, more recently, anti-CGRP monoclonal antibodies (erenumab, fremanezumab). Although effective for many patients, all these drugs have significant side-effect profiles that compromise treatment adherence.
Topiramate — one of the most prescribed prophylactics — can cause paresthesias, cognitive déficit (often described as "brain fog"), weight loss, nephrolithiasis, and has teratogenic risk. Studies show relevant discontinuation rates within a few months due to adverse effects. Propranolol can cause fatigue, bradycardia, and bronchospasm. Valproate is teratogenic and hepatotoxic.
In this scenario, medical acupuncture can be considered as a complementary prophylactic option, with favorable efficacy and a generally mild adverse-event profile — according to the Cochrane review by Linde et al. (2016) with 22 trials and approximately 5000 patients. The choice between acupuncture and/or pharmacotherapy must be individualized and discussed with the physician.
PROPHYLAXIS: ACUPUNCTURE VS. DRUGS
| ASPECT | PROPHYLACTIC DRUGS | MEDICAL ACUPUNCTURE |
|---|---|---|
| Reduction of attacks | 40–50% of patients respond | 50–59% of patients respond (Cochrane 2016) |
| Adverse effects | Frequent and at times limiting (cognitive, metabolic, cardiovascular) | Generally mild and transient (local hematoma, transient pain); serious AEs rare but possible |
| Treatment adherence | Significant rates of discontinuation in a few months | Good adherence reported; lower burden of systemic effects |
| Pregnancy | Most contraindicated (teratogenicity) | Considered as a non-pharmacological option in international guidelines (e.g., NICE) |
| Duration of effect | Only while taking the drug | Sustained effect possible for a few months after the treatment series |
| Long-term cost | Continuous (monthly medication) | Finite (series of 8–12 sessions with occasional reinforcement) |
How Medical Acupuncture Works in Migraine
Medical acupuncture acts in migraine through neuromodulation of the trigeminovascular system — the same system that modern anti-CGRP drugs target, but through non-pharmacological mechanisms. Functional neuroimaging (fMRI) studies show that acupuncture modulates brain áreas directly involved in migraine pain processing: the trigeminal caudal nucleus, the periaqueductal gray (PAG), the thalamus, and the anterior cingulate córtex.
Electroacupuncture at specific frequencies (2–15 Hz) activates the descending pain inhibitory system, promoting the release of endorphins, enkephalins, and serotonin — neurotransmitters that modulate nociceptive transmission in the trigeminal caudal nucleus and reduce the central sensitization that perpetuates chronic migraine.
Mechanism of Action of Acupuncture in Migraine
Stimulation of Somatic Afferents
Needle insertion activates Aδ and C fibers at craniofacial and cervical points. These afferents converge with trigeminal fibers in the trigeminal caudal nucleus — allowing direct modulation of the migraine pain pathway.
CGRP Modulation
Selected experimental and clinical studies suggest that acupuncture may reduce plasma CGRP levels — a central neuropeptide in migraine pathophysiology. This is a promising mechanistic finding, not equivalent in magnitude or precision to the effect of anti-CGRP monoclonal antibodies.
Activation of the Descending Inhibitory System
Stimulation of the PAG and the nucleus raphe magnus by acupuncture releases serotonin and norepinephrine in the dorsal horn and trigeminal caudal nucleus, inhibiting ascending nociceptive transmission.
Reduction of Central Sensitization
In chronic migraine, the neurons of the trigeminal caudal nucleus become hyperexcitable. Acupuncture normalizes this excitability, raising the threshold for trigeminovascular activation and reducing the probability of new attacks.
Inhibition of Cortical Spreading Depression
Studies in experimental models show that electroacupuncture reduces the frequency and propagation speed of CSD — the electrophysiological phenomenon underlying aura and trigeminovascular activation.
Scientific Evidence
Acupuncture for migraine prophylaxis is one of the indications with the most robust evidence in medicine: a Cochrane review with 22 randomized clinical trials, recommendation by NICE (National Institute for Health and Care Excellence), and inclusion in guidelines from multiple international neurological societies.
CLINICAL OUTCOMES — COCHRANE 2016 AND META-ANALYSES
NICE (United Kingdom)
NICE recommends acupuncture as a prophylaxis option for episodic migraine when topiramate and propranolol are contraindicated, ineffective, or not tolerated. In pregnancy, it is the first line.
Cochrane Collaboration
Level 1A evidence: acupuncture is effective for migraine prophylaxis, with efficacy comparable to that of prophylactic drugs and a superior safety profile.
European Headache Guideline
The European Headache Federation recognizes acupuncture as a non-pharmacological prophylactic treatment with robust evidence for episodic and chronic migraine.
Acupuncture vs. Prophylactic Drugs: Detailed Comparison
One of the most relevant findings in the literature is that acupuncture has prophylactic efficacy equivalent to the main classes of drugs used in migraine prevention, with an expressive advantage in safety profile. The Cochrane review of 2016 and head-to-head trials confirm this equivalence.
ACUPUNCTURE VS. TOPIRAMATE / PROPRANOLOL / VALPROATE
| ASPECT | TOPIRAMATE | PROPRANOLOL | VALPROATE | ACUPUNCTURE |
|---|---|---|---|---|
| Reduction of attacks | −1.7 to −2.6/month | −1.3 to −2.0/month | −1.5 to −2.4/month | −2.3 to −3.2/month |
| Responder rate (≥50%) | 35–45% | 40–50% | 40–45% | 50–59% |
| Main adverse effects | Paresthesias, cognitive déficit, weight loss | Fatigue, bradycardia, bronchospasm | Weight gain, hepatotoxicity, teratogenicity | Generally mild (hematoma, local pain); serious AEs possible but rare |
| Discontinuation rate | 30–40% in 6 months | 20–30% | 25–35% | Low in available RCTs |
| Use in pregnancy | Contraindicated (teratogenic) | Avoid in 1st trimester | Contraindicated (teratogenic) | Considered a non-pharmacological option in guidelines (e.g., NICE) |
| Duration after discontinuation | Attacks return within weeks | Attacks return within weeks | Attacks return within weeks | May persist for a few months in some patients |
Acupuncture Prophylactic Protocol for Migraine
Initial Assessment
Characterization of migraine (with or without aura, frequency, triggers, medications in use). Assessment of cervical and pericranial trigger points. Headache diary for baseline.
Intensive Phase (weeks 1–4)
Two sessions per week. Craniofacial and cervical points for trigeminovascular modulation. Electroacupuncture at 2–15 Hz to activate the descending inhibitory system. Deactivation of trigger points in the trapezius, sternocleidomastoid, and suboccipitals.
Consolidation Phase (weeks 5–8)
One session per week. Monitoring with headache diary. Adjustment of points according to clinical response. Maintenance of trigeminovascular neuromodulation.
Maintenance (monthly)
Monthly or bimonthly sessions to maintain the prophylactic effect. Periodic reassessment. Many patients maintain the benefit for 3–6 months without continuous treatment.
When to See a Medical Acupuncturist
Medical acupuncture is indicated as prophylaxis for episodic migraine (4+ attacks per month) and chronic migraine (15+ days of headache per month). It is particularly valuable in clinical profiles where pharmacology presents limitations.
Profiles with Best Response to Acupuncture
- Episodic migraine with 4 or more attacks per month who wishes non-pharmacological prophylaxis
- Intolerance or contraindication to prophylactic drugs (topiramate, propranolol, valproate)
- Pregnant patients — acupuncture is among the non-pharmacological options considered in pregnancy by international guidelines (e.g., NICE)
- Medication-overuse headache — acupuncture can support the medical plan of gradual medication reduction conducted by the neurologist
- Chronic migraine with associated cervical and pericranial trigger points
- Patients who wish to reduce the dose of pharmacological prophylactics while maintaining attack control
Frequently Asked Questions
Frequently Asked Questions
The standard prophylactic protocol consists of 8–12 sessions: an intensive phase with 2 sessions per week in the first 4 weeks, followed by a weekly consolidation phase for another 4 weeks. Most patients notice a significant reduction in attack frequency after 4–6 sessions. After the complete series, monthly maintenance sessions may be indicated, although many patients maintain the benefit for 3–6 months without additional treatment.
Yes. Acupuncture demonstrates efficacy for both migraine without aura and migraine with aura. Experimental studies suggest that electroacupuncture can reduce the frequency and propagation speed of cortical spreading depression — the neuronal phenomenon underlying migraine aura. Clinically, patients with aura respond comparably to those without aura.
Yes. Acupuncture is one of the few prophylactic options safe during pregnancy, when most drugs (topiramate, valproate) are contraindicated due to teratogenicity. NICE (National Institute for Health and Care Excellence) in the United Kingdom recommends acupuncture as a prophylactic option for pregnant patients with migraine. The medical acupuncturist selects safe points and avoids points with uterotonic action.
It should not be replaced by patient decision. In selected cases, with good response to complementary acupuncture treatment, the neurologist may consider progressive reduction of the pharmacological prophylactic. The safest approach is to start acupuncture while maintaining the prescribed drug and to discuss any dose adjustments exclusively with the prescribing physician.
Although both respond well to acupuncture, the mechanisms and protocols differ. In migraine, the focus is trigeminovascular neuromodulation — craniofacial and cervical points that modulate CGRP and the descending inhibitory system. In tension-type headache, the focus is the deactivation of trigger points in the pericranial and cervical musculature. In practice, many patients have overlap of the two conditions, and the protocol is adjusted individually.
The effect of prophylactic acupuncture for migraine is lasting, but not permanent. Clinical trials show that the reduction in attack frequency is maintained for 3–6 months after the end of the treatment series. Monthly or bimonthly maintenance sessions can prolong the effect. Migraine is a chronic disease, and like prophylactic drugs, acupuncture offers control, not cure — but with the advantage of prolonged residual effect.