How Long Does a Migraine Last? Duration & When to Worry

What is the typical duration of a migraine?

Migraine is defined in part by its duration. The International Headache Society's International Classification of Headache Disorders (ICHD-3) describes an untreated or unsuccessfully treated migraine headache phase as lasting 4 to 72 hours 1Ref 1National Library of Medicine (2025).Migraine.Migraine duration criteria (4–72 hours untreated), the four phases of migraine, and status migrainosus as headache exceeding 72 hours. In practice:

• Short migraines may be over in half a day
• Many common migraines last 12 to 24 hours
• Severe episodes can persist for the full 2 to 3 days

When treatment is taken early and works, the headache phase can be cut significantly shorter. Tracking your own pattern over time gives your clinician the most useful information 2Ref 2Ailani J, Burch RC, Robbins MS; Board of Directors of the American Headache Society (2021).The American Headache Society Consensus Statement: Update on integrating new migraine treatments into clinical practice.Migraine treatment framework including timing of acute therapy, central sensitization, and patterns including prolonged attacks.

What are the four phases, and how long does each last?

Migraine unfolds in up to four phases 1Ref 1National Library of Medicine (2025).Migraine.Migraine duration criteria (4–72 hours untreated), the four phases of migraine, and status migrainosus as headache exceeding 72 hours2Ref 2Ailani J, Burch RC, Robbins MS; Board of Directors of the American Headache Society (2021).The American Headache Society Consensus Statement: Update on integrating new migraine treatments into clinical practice.Migraine treatment framework including timing of acute therapy, central sensitization, and patterns including prolonged attacks:

1. Prodrome (hours to 1–2 days before the headache): Mood shifts, neck stiffness, food cravings, yawning, or increased urination. Not everyone notices this phase.

2. Aura (up to 60 minutes, if present): Visual disturbances, sensory changes, or speech difficulty that typically resolve before or as the headache begins. Only about one-third of people with migraine ever experience aura.

3. Headache phase (4 to 72 hours): Pulsating or throbbing pain, usually one-sided, worsened by routine physical activity, and accompanied by nausea, photophobia, or phonophobia.

4. Postdrome (up to 24–48 hours after pain resolves): A 'migraine hangover' of fatigue, difficulty concentrating, mild head tenderness, and mood changes. This phase is real and can affect daily functioning even after the pain is gone.

Why does my migraine last three days?

A migraine that runs through most or all of the 72-hour window is on the longer end of typical. Several factors can extend duration:

• Delayed or ineffective treatment — taking medication too late in the headache phase reduces its effectiveness as central sensitization deepens
• Medication overuse — frequent use of analgesics or triptans can paradoxically cause rebound headaches and make attacks harder to break over time 3Ref 3Silberstein SD, Holland S, Freitag F, Dodick DW, Argoff C, Ashman E (2012).Evidence-based guideline update: Pharmacologic treatment for episodic migraine prevention in adults: Report of the Quality Standards Subcommittee of the American Academy of Neurology and the American Headache Society.Preventive treatment options to reduce migraine frequency and duration; medication-overuse headache as a complicating factor
• Triggers that persist — ongoing stress, hormonal changes, or disrupted sleep can sustain an attack
• Individual biology — some people simply have longer-lasting attacks as their baseline pattern, which is worth discussing with a clinician

If three-day migraines are your regular experience, preventive treatment options exist and can reduce both frequency and duration 3Ref 3Silberstein SD, Holland S, Freitag F, Dodick DW, Argoff C, Ashman E (2012).Evidence-based guideline update: Pharmacologic treatment for episodic migraine prevention in adults: Report of the Quality Standards Subcommittee of the American Academy of Neurology and the American Headache Society.Preventive treatment options to reduce migraine frequency and duration; medication-overuse headache as a complicating factor.

What is status migrainosus — when a migraine won't go away?

When a migraine lasts longer than 72 hours, it is called status migrainosus 1Ref 1National Library of Medicine (2025).Migraine.Migraine duration criteria (4–72 hours untreated), the four phases of migraine, and status migrainosus as headache exceeding 72 hours. This is not a common occurrence, but it can be debilitating. People with status migrainosus often experience:

• Continuous severe headache with no meaningful relief
• Significant nausea or vomiting leading to dehydration
• Inability to take or keep down oral medications

Status migrainosus typically requires treatment beyond what can be managed at home — intravenous fluids, anti-nausea medication, or rescue therapies administered in a clinic or emergency department setting.

Does treatment choice affect how long a migraine lasts?

Significantly. Migraine-specific medications — particularly triptans and the newer CGRP-targeting agents (gepants and lasmiditan) — are most effective when taken early in the headache phase before central sensitization becomes established 2Ref 2Ailani J, Burch RC, Robbins MS; Board of Directors of the American Headache Society (2021).The American Headache Society Consensus Statement: Update on integrating new migraine treatments into clinical practice.Migraine treatment framework including timing of acute therapy, central sensitization, and patterns including prolonged attacks3Ref 3Silberstein SD, Holland S, Freitag F, Dodick DW, Argoff C, Ashman E (2012).Evidence-based guideline update: Pharmacologic treatment for episodic migraine prevention in adults: Report of the Quality Standards Subcommittee of the American Academy of Neurology and the American Headache Society.Preventive treatment options to reduce migraine frequency and duration; medication-overuse headache as a complicating factor. Taking any acute treatment after the migraine has been present for hours reduces efficacy. This is one of the strongest arguments for identifying and treating attacks early.

For people with four or more migraine days per month, daily preventive medication can substantially reduce both the number of attack days and the duration of individual attacks. A Gale primary care clinician can review your pattern and discuss whether preventive therapy is appropriate.

When should I call a clinician or go to urgent care?

Contact a clinician if:

• Your migraine has lasted more than 72 hours without significant improvement
• You cannot keep fluids down and are at risk of dehydration
• Your usual medications are not providing any relief
• The pain is the worst of your life or feels different from your typical migraines

A Gale primary care clinician can help evaluate your migraine pattern, discuss rescue and preventive treatment options, and refer to a neurologist when appropriate.