How long does a migraine attack last?

By the ICHD-3 diagnostic definition, the headache phase of an untreated or unsuccessfully treated migraine attack lasts 4 to 72 hours in adults. With the prodrome before and the postdrome after, the full episode can stretch across several days.

What are the phases of a migraine attack?

Up to four: prodrome (hours to a day or two of warning signs like yawning, cravings, and mood shifts), aura (5–60 minutes of visual or sensory disturbances, in about a quarter of patients), the headache phase (4–72 hours), and postdrome (up to a day or two of fatigue and fogginess).

When is a long migraine a reason to see a doctor?

If an attack runs past 72 hours, is the worst headache of your life, comes on abruptly like a thunderclap, or arrives with new symptoms such as weakness, confusion, speech trouble, or fever — seek medical care. Persistent attacks beyond 72 hours (status migrainosus) merit contacting a clinician rather than waiting them out.

Answers

How long do migraines last?

By the formal diagnostic definition, the headache phase of an untreated migraine attack lasts 4 to 72 hours in adults. The full episode is usually longer: warning signs can begin a day or two before the pain, and a foggy "hangover" phase can trail a day or two after it.

Updated August 2026 · 6 min read

Where the 4–72 hour figure comes from

The number isn't folklore — it's a diagnostic criterion. The International Classification of Headache Disorders (ICHD-3) defines migraine without aura partly by attacks "lasting 4–72 hours (untreated or unsuccessfully treated)." That range is one of the features clinicians use to distinguish migraine from other headache types: tension-type headaches can last from half an hour to a week but lack migraine's accompanying features, while cluster headache attacks are far shorter — minutes to about three hours — and behave very differently. Duration, in other words, is diagnostic information, which is one reason it's worth recording rather than guessing.

Within that wide range, most people have a personal "usual": some reliably lose an afternoon, others reliably lose two days. In children, attacks are often shorter. Successful early treatment can cut an attack far below its untreated length — which is precisely why the definition specifies untreated.

The four phases — and why attacks feel longer than the headache

Prodrome (hours to ~48 hours before). Subtle warnings: yawning, food cravings, mood shifts, stiff neck, unusual tiredness or bursts of energy. Not everyone gets it, and many who do only recognize it in hindsight — or through a diary.
Aura (5–60 minutes, about a quarter of patients). Reversible neurological symptoms, most often visual — shimmering zigzags, blind spots — sometimes tingling or speech difficulty, usually just before or alongside the early headache. More in our guide to migraine aura.
Headache phase (4–72 hours). The attack proper: often one-sided, throbbing pain, worsened by movement, with nausea and sensitivity to light and sound.
Postdrome (up to ~48 hours after). The "migraine hangover" — drained, foggy, tender-headed. Research suggests most patients experience some postdrome, and it's a real part of the attack's cost even though the pain has stopped.

Add the phases up and a "one-day migraine" can genuinely occupy three or four days of your week — worth remembering when you count what migraine actually takes from you.

When to seek medical care

An attack that grinds past 72 hours (sometimes called status migrainosus) is a reason to contact a clinician, not to wait it out. Seek urgent care for any headache that is sudden and explosive ("thunderclap"), the worst of your life, or accompanied by new weakness, confusion, trouble speaking, stiff neck, fever, or a first-ever aura — these need ruling out of causes beyond migraine.

Why tracking duration is worth the bother

Duration is one of the most useful — and worst-remembered — numbers in a migraine history:

It anchors diagnosis. The 4–72 hour window, attack by attack, is part of what confirms migraine and separates it from tension-type and cluster patterns.
It measures treatment honestly. A preventive that turns 48-hour attacks into 12-hour ones is working, even if the attack count hasn't budged. Without recorded durations, that improvement is invisible.
It exposes your true burden. "Four attacks a month" sounds moderate until the diary shows they average 60 hours each. Clinicians weigh that difference.
It flags drift. Attacks stretching longer over months — or blurring into one another — is a pattern to bring to a doctor, and one that's almost impossible to notice without records.

The practical difficulty is that nobody stares at a clock mid-attack. This is where a diary that timestamps for you earns its keep: in Dim, you log the start in three taps when the attack begins, close the entry when it ends, and the duration math — per attack and on average — happens on its own, alongside auto-captured weather, pressure, and sleep. Months later, "how long do your attacks last?" has an answer with a decimal point.

Quick answers

Can a migraine last only an hour or two?

Short headaches happen, and treated attacks can end quickly — but by definition an untreated migraine attack runs at least 4 hours in adults. Frequent, very short, severe attacks are a pattern worth describing to a doctor, since other headache types behave that way.

Is a 3-day migraine normal?

Attacks up to 72 hours sit within the standard definition, so a three-day attack can still be typical migraine. If yours regularly push that limit, or one crosses it, bring it to a clinician — documented durations in hand.

Why do I feel wrecked the day after the pain ends?

That's postdrome — a recognized final phase with fatigue, fogginess, and head tenderness that can last up to a day or two. It's part of the attack, and worth logging as part of its true length.

Know your real numbers

Dim timestamps every attack from first tap to all-clear, so duration, frequency, and patterns compute themselves — ready to show your doctor.

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Dim is a diary, not a medical device. This article is general information, not medical advice — it does not diagnose, treat, or prevent any condition. Always consult a qualified clinician about your health.