A migraine isn’t just a bad headache. It’s a neurological event with a specific pattern: throbbing or pulsing pain, usually on one side of the head, lasting 4 to 72 hours, and accompanied by nausea, vomiting, or intense sensitivity to light and sound. If your headache gets worse when you walk up stairs or do simple physical activity, that’s one of the strongest clues you’re dealing with a migraine rather than an ordinary headache.
Migraines are extremely common, especially among women between 35 and 45. But many people live with them for years without realizing what they are, chalking them up to stress or tension. Here’s how to recognize the pattern.
The Core Symptoms That Define a Migraine
Doctors use a specific checklist to diagnose migraine. You don’t need every symptom on it, but you do need a combination. The headache itself should have at least two of these four features: pain on one side of the head, a pulsating or throbbing quality, moderate to severe intensity, and pain that gets worse with routine movement like walking or bending over. On top of that, during the headache you experience at least one of the following: nausea or vomiting, or sensitivity to both light and sound.
A formal diagnosis typically requires at least five attacks that fit this pattern, each lasting between 4 and 72 hours when untreated. In children and teenagers, attacks can be shorter, starting at around two hours. If a headache pushes past the 72-hour mark without responding to any treatment, that’s a condition called status migrainosus, and it warrants medical attention.
How a Migraine Differs From Other Headaches
The most common headache people confuse with a migraine is a tension headache. Tension headaches feel like a band of pressure around the entire head. The pain is steady, not throbbing, and it doesn’t get worse when you move around. You typically won’t feel nauseous or need to retreat to a dark room. If you can push through your day without much trouble, it’s more likely tension than migraine.
Cluster headaches are harder to confuse once you know their signature. They cause excruciating pain focused around or behind one eye, with tearing, redness, or a runny nose on the same side. They come on fast, last 15 minutes to 3 hours, and strike repeatedly over weeks before disappearing for months. Migraines are slower to build, last much longer, and center more broadly across one side of the head.
A hangover headache can mimic migraine with throbbing pain and nausea, but it affects both sides of the head and has an obvious cause. Caffeine withdrawal headaches also pulse on both sides and appear within 24 hours of skipping your usual coffee. Fasting headaches tend to sit in the forehead, feel dull rather than throbbing, and stay mild to moderate.
The Four Phases of a Migraine
Most people think of a migraine as the headache itself, but it can actually unfold in four distinct stages. Not everyone experiences all four, but recognizing the early ones can give you a window to treat the attack before it peaks.
Prodrome
One to two days before the headache hits, you might notice subtle shifts: unusual food cravings, neck stiffness, frequent yawning, mood swings (from irritable to oddly euphoric), increased thirst, or more trips to the bathroom. These warning signs are easy to miss until you start tracking them, but they’re remarkably consistent from one attack to the next for any given person.
Aura
About one in four migraine sufferers experiences aura, a wave of temporary neurological symptoms that usually starts gradually and builds over several minutes, lasting 20 minutes to an hour. The most common type is visual: zigzag lines that float across your field of vision, shimmering spots, flashes of light, or blind spots sometimes outlined by a bright ring. Some people get sensory aura instead, like tingling that starts in one hand and slowly creeps up the arm, or numbness in the face, tongue, or mouth. Less commonly, aura can cause difficulty speaking or temporary weakness on one side of the body.
Aura almost always resolves completely before or shortly after the headache begins. If it doesn’t, or if weakness or speech problems persist, that’s a red flag worth immediate evaluation.
Attack
This is the main event: hours of throbbing head pain, typically on one side (though it can affect both). Light hurts. Sound hurts. Sometimes smell and touch do too. Nausea and vomiting are common. Most people need to lie down in a quiet, dark room. Without treatment, this phase lasts 4 to 72 hours.
Postdrome
After the pain subsides, many people feel drained, foggy, or washed out for up to a day. Some describe it as a “migraine hangover.” Sudden head movements can briefly trigger a flash of pain. A smaller number of people feel oddly euphoric or energized once the attack lifts.
Patterns That Confirm It Over Time
A single bad headache can’t tell you much. The pattern across multiple episodes is what confirms migraine. Keeping a simple log helps: note when the headache started, which side it was on, what it felt like, whether movement made it worse, and what other symptoms came with it. After five or more episodes that fit the pattern described above, you can be fairly confident.
Pay attention to triggers too. Hormonal shifts (around menstruation), disrupted sleep, skipped meals, alcohol, weather changes, and strong sensory stimuli are all common migraine triggers. If the same situations repeatedly precede your headaches, and the headaches come with nausea or light sensitivity, the picture becomes clearer.
Chronic migraine is a separate category. If you’re getting headaches more than 15 days a month for three months or longer, and at least 8 of those days have migraine features, that qualifies as chronic migraine. This is worth bringing to a doctor because preventive treatment can reduce the frequency significantly.
Warning Signs That Something Else Is Going On
Most headaches, even severe ones, aren’t dangerous. But certain features suggest the headache has an underlying cause that needs urgent evaluation.
- Sudden, explosive onset. A headache that reaches maximum intensity within seconds or minutes, sometimes called a thunderclap headache, can signal a ruptured blood vessel in the brain. Migraines build gradually.
- New headaches after age 50. First-time headaches appearing later in life are more likely to have a secondary cause, from blood pressure problems to something structural.
- Neurological symptoms that don’t fit aura. Persistent weakness on one side, new numbness that doesn’t resolve, or vision changes that linger are not typical of migraine aura, which clears within an hour.
- Clear progression. A headache pattern that steadily worsens over weeks, becoming more frequent or more severe with no plateau, is worth investigating.
- Fever, night sweats, or weight loss. These systemic symptoms alongside headaches point toward infection or another underlying illness.
- Headache that changes with position. Pain that dramatically worsens when you stand up or lie down, or that’s triggered by coughing or straining, can indicate a pressure problem in the skull.
- New headache during or after pregnancy. This should be evaluated for vascular or hormonal complications specific to pregnancy.
None of these features are typical of migraine. If any of them apply to your headache, it’s the wrong time for self-diagnosis.