NEUROLOGY WEATHER DESK / TOPIC · MIGRAINE & TRIPTANS / REF · AHS / NIH / FDA / UPDATED OCT 2025
Neurology · Neurovascular disorder

Migraine is not a headache. It is a storm system moving through the nervous system.

Over 39 million Americans live with migraine, and the majority of them can reduce both attack frequency and severity — when the treatment matches the mechanism. This is the storm map: what happens in each phase, how aura works, how triptans interrupt an attack, which triggers actually matter, and which symptoms mean something else entirely.

15 min read
AHS & NIH aligned
4 phases · 6 triptans
39M
Americans live with migraine — about 1 in 7 adults, women roughly 3× more often than men.
25%
Of migraine patients experience aura before the headache phase — most commonly visual.
4
Phases in the full migraine cycle: prodrome, aura, headache, postdrome.
10+
Days per month of acute pain medication is the threshold for medication overuse headache.
Section 01 · The four phases

Migraine is not the headache. It is the whole cycle.

What patients call "a migraine" is usually one phase of a longer neurological event. The headache is the loudest symptom, but the cycle begins hours or days before it and lingers after it ends.

The mechanism involves activation of the trigeminal nerve and the release of neuropeptides — most notably calcitonin gene-related peptide (CGRP) — which dilate cranial blood vessels, sensitize nerve endings, and sustain the pain. The old theory that migraine was primarily a vascular problem has been replaced by a neurovascular model in which the nervous system drives the vascular changes, not the other way around.

This is why the newest migraine drugs — CGRP monoclonal antibodies and gepants — target the neuropeptide itself rather than the blood vessels, and why they work as both acute and preventive treatment. It is also why migraine is classified as a neurological disorder, not a symptom.

Phase 01
2–48 hrs before

Prodrome

Subtle warning signs: yawning, food cravings, irritability, neck stiffness, difficulty concentrating, sensitivity to light. Recognizing this phase lets you treat early.

Phase 02
20–60 min

Aura

Present in about 25% of patients. Most commonly visual — flashing lights, zigzag lines, blind spots. Can also be sensory (tingling) or, rarely, involve speech. Usually resolves before the headache begins.

Phase 03
4–72 hrs

Headache

Moderate to severe throbbing pain, often one-sided, worsening with routine activity. Frequently accompanied by nausea, vomiting, and sensitivity to light and sound. This is when acute treatment is most effective.

Phase 04
Up to 24 hrs

Postdrome

The "migraine hangover." Fatigue, difficulty concentrating, mood changes, and lingering sensitivity to stimuli. Many patients feel drained for a full day after the pain resolves.

Section 02 · Aura

What aura actually looks like — and what it does not.

Typical visual aura

Fortification spectra — the zigzag that starts small and grows.

A typical visual aura begins near the center of vision and gradually expands outward over 5 to 20 minutes. The classic shape is a fortification spectrum — a jagged line of shimmering, colored light that resembles a medieval fortress wall.

Behind the expanding zigzag is usually a scotoma — a blind spot that patients describe as "not being able to see through" the affected area, even though they may not consciously notice it until tested.

Aura is not the same as a seizure, and it is not the same as a stroke. It usually resolves within 60 minutes. Any aura lasting longer than an hour, or any new focal neurological symptom after age 50, requires urgent evaluation.

Section 03 · Acute treatment

Triptans — the drugs that interrupt the storm.

Triptans are not painkillers. They activate 5-HT1B/1D serotonin receptors, which constrict dilated cranial vessels and reduce the release of CGRP and other pain-signaling peptides. Taken early in the attack, they abort or substantially reduce symptoms in most patients.

◆ Oral triptans · approximate onset and duration · U.S. reference
Triptan Onset Half-life Notes
Sumatriptan ~30 min ~2 hrs Most studied. Available as tablets, nasal spray, and injection. Generic available.
Rizatriptan ~30 min ~2–3 hrs Fast onset. Available as orally disintegrating tablets. Generic available.
Eletriptan ~30–60 min ~4 hrs Higher efficacy in some comparative studies. Not for use within 72 hrs of certain CYP3A4 inhibitors.
Almotriptan ~30–60 min ~3–4 hrs Fewer drug interactions. Well tolerated in many patients.
Naratriptan ~60 min ~6 hrs Slower onset but longer duration. Useful for prolonged attacks.
Frovatriptan ~120 min ~26 hrs Very long half-life. Often used for menstrual migraine prevention.

Two newer classes have entered the U.S. market in recent years. Gepants — ubrogepant and rimegepant — are oral CGRP receptor antagonists taken at the onset of an attack. They are slower than triptans but do not constrict blood vessels, which makes them a reasonable option for patients with cardiovascular risk factors who cannot safely take a triptan. Ditans — lasmiditan — are 5-HT1F agonists that also avoid vasoconstriction, but carry a warning about driving impairment.

The most common reason a triptan "does not work" is not that it is the wrong triptan. It is taking it too late. Triptans are most effective when taken early in the headache phase — ideally within 20 to 30 minutes of the pain beginning, and often at the first sign of the prodrome if the patient recognizes it. Waiting until the pain is severe substantially reduces the response rate.

Two practical rules matter as much as the choice of drug. First, triptans are contraindicated in patients with coronary artery disease, uncontrolled hypertension, prior stroke, or certain types of hemiplegic or basilar migraine. Second, using acute medication on more than 10 days per month can cause medication overuse headache — a chronic daily headache that paradoxically worsens the original condition.

◆ Medication overuse headache

Taking acute migraine medication on 10 or more days per month (for triptans and combination analgesics) or 15 or more days per month (for simple analgesics) can lead to chronic daily headache. This is one of the most common reasons for a worsening migraine pattern — and it usually requires a managed withdrawal, not more medication.

Section 04 · Triggers

What actually sets off an attack — six categories, ranked by evidence.

Triggers are personal, but the categories are consistent. Some matter far more than others, and a few are more myth than mechanism.

Top trigger

Sleep disruption

Both too little and too much sleep are common triggers. Irregular schedules are worse than short sleep alone. Consistent wake times matter more than total hours.

Strong evidence

Stress and the let-down

Stress itself is a trigger, but the relaxation after stress — the weekend, the vacation, the day after a deadline — is often when the attack actually begins. This is why "weekend migraine" is a recognized pattern.

Common

Hormonal fluctuation

Estrogen withdrawal around menstruation triggers attacks in many women. Menstrual migraine is often more prolonged and less responsive to acute treatment than attacks at other times of the cycle.

Real but variable

Weather and barometric changes

Shifts in atmospheric pressure, high humidity, and temperature swings correlate with migraine in some patients. Unlike other triggers, weather cannot be avoided — so it is used more as a forecasting tool than a control lever.

Variable

Foods and fasting

Alcohol (especially red wine), aged cheese, processed meats, and aspartame are often cited. Skipping meals is a more reliable trigger than any specific food for most patients.

Sensory

Light, sound, and smell

Bright light, flickering screens, strong perfumes, and loud environments trigger attacks in sensitive patients. Photophobia between attacks is itself a marker of migraine biology — not a personality trait.

Section 05 · Red flags

Symptoms that are not just a migraine.

Most headaches in patients with a migraine diagnosis are migraine. The following features, however, are treated as secondary headaches until proven otherwise — and require prompt evaluation.

SNOOP · secondary headache screening

Six features that change the diagnosis — and the urgency.

S
Systemic symptoms Fever, neck stiffness, rash, or weight loss with a new headache. Raises concern for infection or systemic illness.
N
Neurological signs Weakness, numbness, confusion, difficulty speaking, or a change in consciousness. Call emergency services.
O
Onset sudden and severe A thunderclap headache — reaching peak intensity within seconds to one minute. A medical emergency.
O
Older age of onset New headache after age 50, particularly if progressive. Warrants imaging and possibly temporal artery evaluation.
P
Pattern change A stable migraine pattern that suddenly worsens in frequency, severity, or character. Always worth a review.
P
Positional or papilledema Headache that changes with posture, or is accompanied by visual obscurations. Suggests raised or low intracranial pressure.
Section 06 · Paying for it

Migraine medication is not cheap. But the price is not fixed.

The price landscape in migraine treatment is genuinely uneven. Triptans are available as generics — sumatriptan, rizatriptan, naratriptan, and almotriptan all have low-cost generic versions in the United States, and sumatriptan in particular is widely stocked at a fraction of its original brand price. Older preventives — propranolol, amitriptyline, topiramate — are also inexpensive generics.

Where costs climb sharply is with the newer agents: CGRP monoclonal antibodies (erenumab, fremanezumab, galcanezumab, eptinezumab), gepants (ubrogepant, rimegepant), and botulinum toxin for chronic migraine. These can run into the hundreds or thousands of dollars per month without insurance, and coverage varies widely by plan. Many manufacturers run patient assistance and copay programs that bring the cost down substantially for commercially insured patients.

Regardless of which drug is prescribed, the same comparison logic applies: the price varies by more than five-fold between licensed U.S. pharmacies for the same tablet. A live prescription price comparison shows the current spread in about two minutes, and the same approach works for every generic on the list. If you are starting an online refill for the first time, the process is documented step by step in this how to order prescriptions online guide — prescription first, licensed seller second, small first order third.

One practical warning specific to migraine: do not skip preventive doses to save money, and do not stockpile acute medication to extend a prescription. Both are common responses to cost pressure, and both make the underlying condition worse. If the medication is unaffordable, tell the prescriber — there is almost always a cheaper alternative, a manufacturer assistance program, or a different drug class that fits the budget.

Before you sign for any seller, verify them. A working VIPPS seal that resolves to a live NABP record, a real U.S. street address, and a prescription requirement that cannot be waived. A transparency page like this one about Metformin4You is a reasonable example of the standard to expect.

Section 07 · Questions

Five asked most often at the neurology clinic.

Q·01 What is the difference between a migraine and a regular headache? +
A migraine is a neurological disorder, not just a severe headache. It typically involves moderate to severe throbbing pain, often on one side, along with nausea, sensitivity to light and sound, and worsening with routine activity. Many people also experience phases before and after the pain, such as fatigue, food cravings, or difficulty concentrating.
Q·02 How do triptans work for migraine? +
Triptans activate serotonin 5-HT1B/1D receptors, which constricts dilated cranial blood vessels and reduces the release of pain-signaling neuropeptides such as CGRP. Taken early in the attack, they abort or substantially reduce pain and associated symptoms in most people. They are not painkillers in the usual sense — they interrupt the migraine mechanism itself.
Q·03 What is medication overuse headache? +
Medication overuse headache is a chronic daily headache caused by taking acute pain medication too frequently — typically on 10 or more days per month for triptans or combination analgesics, or 15 or more days per month for simple analgesics. It is common in people with migraine and requires withdrawal from the overused medication, which is best managed with medical support.
Q·04 When should I see a doctor about new headaches? +
New headache after age 50, sudden severe headache reaching peak intensity within seconds to a minute (thunderclap), headache with fever or neck stiffness, headache after head injury, headache with neurological symptoms such as weakness or confusion, or a significant change in an established headache pattern all require prompt medical evaluation.
Q·05 Can migraine be prevented? +
Yes. For people with frequent or disabling attacks, preventive treatment can reduce attack frequency and severity substantially. Options include beta-blockers, topiramate, amitriptyline, CGRP monoclonal antibodies, and botulinum toxin for chronic migraine. Lifestyle measures such as regular sleep, hydration, and meal timing also reduce attack frequency.
◆ Sources & verification
This reference is aligned with public clinical guidance from the American Headache Society, the National Institute of Neurological Disorders and Stroke (NIH), and the U.S. Food and Drug Administration's BeSafeRx program. Drug-label information draws on the National Library of Medicine's DailyMed database and MedlinePlus. Pharmacy verification follows the NABP VIPPS program.
◆ Before the next refill

Migraine is not the price you have to pay — and neither is the pharmacy.

Triptans and many preventives are available as low-cost generics, and the same tablet can cost five to ten times more at one licensed pharmacy than another. A two-minute comparison across licensed U.S. sellers is the highest-yield habit you can add to a migraine treatment plan — no prescription change required. Begin with the current Metformin price comparison as a live demonstration of how wide the spread runs.

Open the price comparison