A migraine headache typically lasts between 4 and 72 hours when untreated. That’s the clinical range established by the International Headache Society, though many people experience attacks on the shorter or longer end of that window. But the headache phase is only one part of the story. A full migraine attack, from the earliest warning signs to full recovery, can stretch well beyond three days.
The Headache Phase: 4 to 72 Hours
The throbbing, often one-sided pain most people think of as “the migraine” falls within a 4-to-72-hour window when it goes untreated or when treatment doesn’t work. Some people consistently get shorter attacks that resolve in half a day. Others endure pain that builds and lingers for the full three days. Children and adolescents under 18 can have shorter attacks, sometimes lasting as little as two hours.
If you fall asleep during a migraine and wake up without pain, the attack is considered to have ended when you woke up. Sleep is one of the most effective ways a migraine resolves naturally, which is why many people instinctively retreat to a dark, quiet room.
A Migraine Attack Has Four Phases
The headache itself sits in the middle of a longer sequence. A full migraine attack moves through up to four distinct phases, and not everyone experiences all of them.
Prodrome
Hours or even days before the pain starts, you may notice subtle changes: food cravings, mood shifts, neck stiffness, frequent yawning, or increased thirst. This warning phase can last several hours or stretch over multiple days. Learning to recognize your prodrome signals can give you a head start on treatment.
Aura
About one in four people with migraine experience aura, which typically involves visual disturbances like zigzag lines, blind spots, or flashing lights. Some people get tingling in their face or hands, or have difficulty finding words. Aura symptoms build gradually over at least five minutes and usually resolve within an hour. In roughly 20% of people who get aura, it can last longer than 60 minutes, and in rare cases it persists for days.
Headache
This is the main phase, lasting those 4 to 72 hours. Pain is usually pulsating, moderate to severe, and worsened by routine physical activity like walking or climbing stairs. Nausea, vomiting, and extreme sensitivity to light, sound, or smells commonly accompany it.
Postdrome
After the pain fades, most people aren’t immediately back to normal. More than 80% of migraine sufferers experience a postdrome, sometimes called a “migraine hangover.” This phase brings fatigue, brain fog, body soreness, and difficulty concentrating. It can last anywhere from a few hours to two full days. Many people describe feeling washed out or fragile during this window, even though the pain itself is gone.
When you add all four phases together, a single migraine attack can span anywhere from about a day to nearly a week from start to finish.
When a Migraine Won’t Stop
A migraine that lasts longer than 72 hours is classified as status migrainosus. This is a recognized complication, not just a “bad migraine.” The pain is continuous or nearly so, and it often resists the treatments that normally work for you. Prolonged vomiting during these extended attacks can lead to dehydration, which tends to make the migraine worse in a vicious cycle.
If your migraine pain persists beyond 72 hours, that’s a signal to seek medical care. An emergency room visit is especially worth considering if you can’t keep fluids down.
Episodic vs. Chronic Migraine
How long individual attacks last is a separate question from how often they occur. The dividing line between episodic and chronic migraine is 15 headache days per month. If you have 15 or more headache days monthly, with at least 8 of those meeting migraine criteria, you meet the definition for chronic migraine. People with chronic migraine often feel like they barely recover from one attack before the next begins, which makes the total time spent in pain significantly higher even if each individual attack falls within the normal range.
Episodic migraine, by contrast, means fewer than 15 headache days per month. But episodic migraine can progress to chronic over time, particularly when attacks are left untreated or when pain medications are used too frequently.
What Affects How Long Your Migraines Last
Several factors influence whether your attacks tend toward the shorter or longer end of the spectrum. Treating early matters enormously. Taking medication at the first sign of an attack, rather than waiting for the pain to peak, tends to shorten the overall duration and reduce severity. Delaying treatment often lets the pain escalate to a point where medications become less effective.
Sleep plays a major role. Many attacks resolve during sleep, so getting rest in a dark, quiet environment at onset can cut hours off an attack. Dehydration, stress, and hormonal fluctuations can all prolong attacks or make them more resistant to treatment.
Over time, you’ll likely notice patterns in your own attacks. Some people consistently have 6-hour migraines; others reliably get two-day episodes. Tracking your attacks, including when the first symptoms appear and when you feel fully recovered, gives you a realistic picture of your personal timeline and helps you plan around it.