A single migraine attack typically lasts 4 to 72 hours when untreated, according to the International Headache Society’s diagnostic criteria. But that official window only counts the headache phase. The full experience, from the earliest warning signs to the foggy aftermath, can stretch well beyond three days.
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, each with its own timeline and symptoms. Not everyone experiences all four, but understanding them helps explain why a migraine can feel like it dominates your entire week.
The prodrome is the early warning phase. You might notice food cravings, mood changes, neck stiffness, frequent yawning, or increased thirst hours or even days before the headache arrives. This phase can last several hours to several days, and many people learn to recognize these signals as reliable predictors of an incoming attack.
The aura phase affects roughly one in four people with migraines. It typically involves visual disturbances like zigzag lines, blind spots, or flashing lights, though it can also cause tingling, numbness, or difficulty speaking. Each aura symptom lasts 5 to 60 minutes, gradually building and then fading. In about 20% of people who get auras, symptoms can persist longer than 60 minutes.
The headache phase is what most people think of as “the migraine.” This is the window of throbbing, often one-sided pain accompanied by nausea, light sensitivity, and sound sensitivity. It lasts from several hours to up to three days. The 4 to 72 hour range used for diagnosis applies here specifically.
The postdrome, often called the migraine hangover, lingers after the pain resolves. It can last a few hours to two days, with symptoms like fatigue, body aches, stiff neck, difficulty concentrating, dizziness, and lingering sensitivity to light and sound. Some people also experience mood shifts ranging from mild depression to an unusual sense of euphoria. This phase is easy to underestimate, but it can leave you feeling foggy and drained for up to 48 hours after the headache itself is gone.
Why Duration Varies So Much
Several factors influence how long any individual attack lasts. The type of migraine matters: migraines with aura tend to have a shorter headache phase than those without. How early you treat the attack plays a major role too. Taking medication at the first sign of pain often shortens the headache phase significantly compared to waiting until pain is severe.
Sleep, hydration, and stress levels all affect duration. Some people find that sleeping through the headache phase can cut an attack short, while others wake up with the pain still present. Hormonal fluctuations, particularly around menstruation, tend to produce longer and more treatment-resistant attacks. Menstrual migraines commonly last longer than migraines triggered by other factors.
How Quickly Treatment Can Help
Prescription migraine medications called triptans are the most widely used option for stopping an attack once it starts. A large 2024 systematic review in The BMJ compared the major options and found that the most effective triptans can produce complete pain freedom within two hours of taking a dose, with some maintaining that relief through the full 24-hour period afterward. The key factor for most people is timing: treating early in the headache phase, when pain is still mild, consistently produces better results than waiting.
Over-the-counter pain relievers can also shorten mild to moderate attacks, particularly when combined with caffeine. But if you find yourself treating more than two or three days per week with any pain medication, you risk developing medication overuse headache, which can make attacks more frequent and harder to treat.
Migraines in Children
Children and adolescents tend to have shorter attacks than adults. The diagnostic criteria for pediatric migraine allow for a duration as short as 2 hours, compared to the 4-hour minimum in adults. The upper limit is also shorter at 48 hours rather than 72. Kids are also more likely to have bilateral pain (on both sides of the head) and prominent nausea or vomiting, with a shorter but more intense headache phase overall.
When a Migraine Won’t Stop
A migraine that lasts longer than 72 hours is classified as status migrainosus. This is a recognized complication of migraine defined by the International Headache Society as an unremitting, debilitating attack exceeding three days. Brief interruptions of up to 12 hours from medication or sleep don’t reset the clock. Status migrainosus often requires different treatment than a standard attack, typically involving medical intervention beyond what you’d normally use at home.
If your attacks are regularly pushing past the three-day mark, that pattern is worth discussing with a doctor. It may indicate the need for preventive treatment rather than relying solely on medications that stop individual attacks.
Episodic vs. Chronic Migraine
The duration of a single attack is different from how often attacks occur. Episodic migraine means you have fewer than 15 headache days per month. Chronic migraine is diagnosed when you have headaches on 15 or more days per month for more than three months, with at least 8 of those days meeting the criteria for migraine. Chronic migraine doesn’t necessarily mean each individual attack lasts longer, but the frequency can make it feel like you never fully recover between episodes, especially when postdrome symptoms from one attack overlap with the prodrome of the next.
The shift from episodic to chronic migraine often happens gradually. Risk factors include frequent use of acute medications, obesity, sleep disorders, anxiety, depression, and a high baseline attack frequency. Preventive treatments, whether daily medications, monthly injections, or lifestyle modifications, aim to reduce attack frequency and keep migraines from becoming chronic.