Migraine is not a bad headache.
Migraine is a neurological disorder, not a pain tolerance problem. Here's what's actually happening, why it gets dismissed, and what works.
What migraine actually is
Migraine is a neurological disorder that affects roughly 12% of the population, with a 3:1 female-to-male ratio after puberty. The defining symptom is the migraine attack: typically 4–72 hours of moderate-to-severe head pain, often unilateral and pulsating, almost always with nausea and/or sensitivity to light, sound, or smell. Many people have aura — visual disturbances, numbness, speech changes — that precedes the pain phase. About a third of attacks come without head pain at all (silent migraine).
Chronic migraine is defined as 15+ headache days per month for at least three months, with migraine features on at least 8 of those days. About 2% of the population meets criteria for chronic migraine. It is one of the most disabling conditions in the world per WHO disability rankings.
What is happening in the brain
The current model of migraine, refined by Peter Goadsby and others, frames it as a disorder of sensory processing. The migraine brain, between attacks, is hypersensitive to sensory input — light, sound, smell, motion, hormonal shifts, sleep changes, weather. During an attack, this sensitivity escalates and the brain initiates a cascade involving:
Cortical spreading depression (a wave of altered electrical activity that crosses the cortex slowly — this is what produces aura). Activation of the trigeminovascular system (the trigeminal nerve and surrounding blood vessels release inflammatory peptides like CGRP, which cause pain). Brainstem nuclei that modulate sensory input become dysregulated — the brain loses some of its filtering ability, so every input gets through too loud.
This is why a migraine attack involves so much more than head pain: nausea (brainstem), light sensitivity (visual cortex), sound sensitivity (auditory cortex), cognitive fog (prefrontal). It is the whole sensory-processing system going haywire, not just one region having pain.
Why CGRP changed everything
Calcitonin gene-related peptide (CGRP) is a key inflammatory neuropeptide released during migraine. The discovery of its role led, after decades of research, to the first migraine-specific class of medications: the CGRP antagonists. These work by either blocking CGRP itself or its receptor.
For the first time, there are treatments designed specifically for migraine biology, not borrowed from other conditions. Monthly or quarterly injections (erenumab, fremanezumab, galcanezumab, eptinezumab) prevent attacks. Oral 'gepants' (rimegepant, ubrogepant, zavegepant nasal spray, atogepant) treat acute attacks or prevent them. Many people who failed every prior preventive find substantial relief on these. Insurance access is the bigger barrier than efficacy.
what people get wrong
wrongMigraine is just a really bad headache.
closerMigraine is a neurological disorder with multiple symptoms (visual, GI, cognitive, sensory) that often go beyond head pain. About a third of attacks have no head pain at all.
wrongIf you got migraines you'd lose your job, so it can't be that bad.
closerMany people with chronic migraine work through attacks because they have to. 'Functioning while in pain' is not evidence the pain is mild. It is evidence the person has run out of other options.
wrongTriggers cause migraine. If you avoid your triggers, you'll be fine.
closerTriggers are usually permissive (lower the threshold) rather than causative. Many attacks happen without identifiable triggers. Trigger avoidance can become its own restriction-trap. Modern migraine care focuses more on prevention than trigger-tracking.
wrongMigraine is a women's hormonal issue.
closerHormones modulate migraine, but migraine has clear genetic and structural-brain components. Men and pre-pubertal children also have migraine. Reducing it to hormones misses the biology.
wrongIf MRI is normal, the pain isn't real.
closerMigraine does not show up on routine MRI. Imaging is done to rule out other causes (tumor, stroke, AVM). A normal MRI is expected and does not invalidate migraine.
what actually helps
- Acute treatment: triptans (sumatriptan, rizatriptan, etc.) at the FIRST sign of attack — the earlier the more effective.
- Newer acute: gepants (rimegepant, ubrogepant), ditans (lasmiditan) — alternatives if triptans are contraindicated or ineffective.
- Preventive treatment for frequent attacks: CGRP monoclonal antibodies (erenumab, fremanezumab, galcanezumab, eptinezumab) or daily preventives (topiramate, propranolol, amitriptyline, candesartan).
- Botox is FDA-approved for chronic migraine (15+ days/month).
- Lifestyle stabilization: regular sleep, regular meals, hydration. Sudden changes (sleep in too late, skip meals) often trigger.
- Magnesium glycinate (400 mg/day) and riboflavin (400 mg/day) have evidence as gentle preventives.
- Tracking attacks in an app to identify patterns — but without becoming obsessive (some people do better not tracking).
- Working with a neurologist who specializes in headache when general care has not been enough.