A migraine attack typically lasts 4 to 72 hours when untreated, according to the International Headache Society’s diagnostic criteria. But the full experience, from the earliest warning signs to the foggy aftermath, can stretch well beyond that window. How long your migraine lasts depends on whether you treat it, which phase you’re counting, and whether you’re an adult or a child.
The Four Phases of a Migraine Attack
A migraine isn’t just a headache that switches on and off. It moves through up to four distinct phases, and the total time from start to finish can be much longer than the headache itself.
The prodrome is the earliest warning phase. You might notice food cravings, mood changes, neck stiffness, or unusual fatigue. This phase can last several hours or stretch across one to two days before any head pain begins. Not everyone recognizes it in the moment, but many people learn to spot their personal warning signs over time.
The aura phase affects roughly one in four people with migraines. It typically involves visual disturbances like flashing lights, zigzag lines, or blind spots, though it can also cause tingling, numbness, or difficulty speaking. Aura symptoms usually build over at least five minutes and last up to 60 minutes. In about 20% of people who get aura, it can last longer than an hour.
The headache phase is what most people think of as the migraine itself. This is the period of moderate to severe, often one-sided, throbbing pain accompanied by nausea, light sensitivity, or sound sensitivity. Without treatment, it lasts from several hours to three days. The 4-to-72-hour range is the clinical benchmark used for diagnosis.
The postdrome, sometimes called the “migraine hangover,” follows the headache. More than 80% of people with migraines experience it. You may feel exhausted, mentally foggy, sore, or just off. This phase can last a few hours to two days. So even after the pain stops, the migraine’s effects on your body can linger for up to 48 more hours.
Add all four phases together and a single migraine event can span anywhere from about half a day to nearly a week.
When a Migraine Lasts Longer Than 72 Hours
A migraine that continues unbroken for more than 72 hours is classified as status migrainosus. It’s considered a complication of migraine rather than a typical attack. The pain and associated symptoms are debilitating, and brief breaks of up to 12 hours from sleep or medication don’t reset the clock. If your migraine pushes past the three-day mark and isn’t responding to your usual treatments, that’s a signal to seek medical attention rather than wait it out.
Migraines Are Shorter in Children
Children’s migraines follow different timing rules. In kids and adolescents, attacks can be as short as two hours and still meet the diagnostic criteria for migraine, compared to the four-hour minimum in adults. Some experts have proposed lowering that threshold even further, to one hour for all children or 30 minutes for children five and younger. Pediatric migraines also tend to be felt on both sides of the head rather than one, which sometimes delays diagnosis because they don’t match the classic adult pattern.
How Treatment Changes Duration
Treating a migraine early can dramatically shorten it. The prescription medications most commonly used to stop an active attack (a class called triptans) provide meaningful pain relief within two hours for 42% to 76% of people, depending on the specific drug and how it’s taken. Complete pain freedom at two hours is achieved in 18% to 50% of patients. Injectable forms work fastest: roughly half of people who use one are completely pain-free within two hours.
Over-the-counter pain relievers like ibuprofen and acetaminophen can also shorten mild to moderate attacks, especially when taken at the first sign of pain. The key variable is timing. The earlier you treat, the more likely you are to cut the attack short. Waiting until pain is severe makes any medication less effective and often means the migraine will run closer to its full natural course.
Episodic vs. Chronic Migraine
Individual attacks still follow the 4-to-72-hour pattern regardless of how often they occur, but the frequency of those attacks determines whether your migraines are classified as episodic or chronic. Chronic migraine means having headaches on 15 or more days per month for more than three months, with at least eight of those days having migraine features. At that frequency, the line between one attack ending and another beginning can blur, making it feel like the migraine never fully goes away.
For people with chronic migraine, the postdrome from one attack may overlap with the prodrome of the next. This cycle is one reason chronic migraine feels so different from occasional episodes, even though the underlying biology is similar. Preventive treatments aim to reduce the total number of monthly migraine days, which in turn gives the brain more recovery time between attacks.