A typical migraine attack lasts between 4 and 72 hours when untreated, though the total experience can stretch longer when you count the warning signs before and the recovery period after. Children tend to have shorter attacks, sometimes lasting as little as 2 hours, while menstrual migraines often run longer and hit harder than attacks at other times of the cycle.
That 4-to-72-hour window only describes the headache itself. A migraine is really a neurological event that unfolds in stages, and understanding each one helps explain why you can feel “off” for days surrounding what might be a single day of head pain.
The Four Phases of a Migraine Attack
Not everyone experiences all four phases, and they can vary from one attack to the next. But a full migraine episode moves through a predictable sequence: prodrome, aura, headache, and postdrome.
The prodrome is the earliest warning. It can show up hours or even days before the headache begins, bringing subtle changes like food cravings, neck stiffness, mood shifts, or unusual fatigue. Many people learn to recognize these signals over time, which can provide a useful window for early treatment.
The aura phase affects a minority of migraine sufferers. It typically involves visual disturbances like flickering lights, zigzag lines, or blind spots, though it can also cause tingling, speech difficulty, or other sensory changes. Each aura symptom builds gradually over at least 5 minutes and usually resolves within 60 minutes. In about 20% of people who get aura, symptoms can last longer than an hour. When multiple aura symptoms occur in sequence, the total aura phase can extend further, up to about 3 hours if three symptoms appear back to back.
The headache phase is what most people think of as “the migraine.” It lasts from several hours to up to three days, with moderate to severe throbbing pain, typically on one side of the head. Nausea, vomiting, and extreme sensitivity to light and sound are common companions.
The postdrome, often called the migraine hangover, follows the pain. About 81% of migraine patients report nonheadache symptoms during this phase, including brain fog, fatigue, and difficulty concentrating. Most people return to normal within 24 hours after the pain stops. In a study tracking over 700 migraine attacks, 54% of postdrome episodes resolved within 6 hours, and only 7% lasted beyond 24 hours.
Children Have Shorter Attacks
Migraine in kids often looks different from the adult version, and duration is one of the biggest differences. The diagnostic threshold for children and adolescents under 18 starts at just 2 hours, compared to 4 hours for adults. In one study of pediatric migraine patients, about 14% had headaches lasting less than 2 hours, and another 35% had attacks in the 2-to-4-hour range. The majority of those shorter attacks occurred in children under 15. Only about 12% of the children studied had attacks exceeding 72 hours.
These shorter durations created a diagnostic problem for years, since many children with genuine migraine didn’t meet the original adult-based criteria. Current guidelines now recognize the 2-hour minimum for pediatric patients.
Why Menstrual Migraines Last Longer
Migraine attacks that occur around menstruation are a distinct challenge. Compared to attacks at other points in the cycle, perimenstrual migraines last longer, are more severe and disabling, require more medication, and are more likely to recur. They also tend to involve greater sensitivity to light and sound. Research published in Neurology confirmed that these differences are consistent and measurable, not just a matter of perception. The hormonal drop in estrogen that triggers the menstrual cycle is the likely driver, which is why these attacks are often more resistant to standard treatment.
How Treatment Affects Duration
Treating a migraine early can dramatically shorten it. Prescription migraine medications called triptans are the most studied option. A large meta-analysis found that standard doses provided headache relief within two hours in 42% to 76% of patients, depending on the specific medication and how it was taken. Complete pain freedom at two hours ranged from 18% to 50%.
The delivery method matters. Injectable forms work fastest, with roughly 1 in 2 patients becoming completely pain-free within two hours. Nasal sprays and oral tablets are somewhat slower but still effective for many people. Over-the-counter pain relievers like ibuprofen or combinations of acetaminophen with caffeine can also shorten mild to moderate attacks, especially when taken at the first sign of symptoms.
Timing is critical. The earlier you treat, the more likely you are to cut the attack short. Waiting until the pain is fully established makes any medication less effective and increases the chance of the headache returning.
When a Migraine Lasts Too Long
A migraine that persists beyond 72 hours is classified as status migrainosus. This is not just a bad migraine; it’s a recognized complication that often requires medical intervention. Prolonged attacks increase the risk of dehydration, especially if vomiting prevents you from keeping fluids down. If your migraine pain has continued past the 72-hour mark or you can’t stay hydrated, that warrants a visit to the emergency room or urgent care.
Episodic vs. Chronic Migraine
Individual attack duration is separate from how often migraines occur. Episodic migraine means you have fewer than 15 headache days per month. Chronic migraine is defined as headache on 15 or more days per month for more than 3 months, with at least 8 of those days having migraine features. The shift from episodic to chronic can happen gradually, and risk factors include overuse of acute pain medications, stress, obesity, and sleep disorders.
Each individual attack in chronic migraine still follows the same phase pattern and duration range. The difference is frequency, not how long a single episode lasts. People with chronic migraine often find it difficult to distinguish where one attack ends and another begins, since they may rarely have a fully pain-free day.