Approximately 70-80% of migraine sufferers identify stress as a trigger. Emotional and physical stressors are among the most common and significant triggers.

In women, hormonal fluctuations are a trigger for about 50-60% of those who suffer from migraines, particularly related to menstrual cycles.

Irregular sleep patterns, including both lack of sleep and oversleeping, affect about 50% of migraine sufferers. Sleep disturbances are a significant trigger for many.

Bright or flickering lights trigger migraines in about 40-50% of sufferers. Similarly, loud noises and strong odors can also be triggers, but the specific percentages vary widely.

Changes in weather or barometric pressure trigger migraines in approximately 30-50% of people with migraines. This includes various weather-related changes like storms, temperature shifts, or high humidity.

Around 20-30% of migraine sufferers report certain foods and drinks as triggers. Common culprits include aged cheeses, processed foods, red wine, chocolate, and foods containing MSG.

Intense physical exercise can trigger migraines in about 10% of sufferers. This includes activities like heavy lifting, running, or even sexual activity.

The percentage of migraine sufferers triggered by medications like vasodilators or oral contraceptives varies, but it can be significant, especially in those with medication-overuse headaches.