A migraine is usually a moderate or severe headache that causes a throbbing pain on one side of the head. Many people who suffer from migraines also show symptoms of migraine, including photosensitivity, light-headedness, nausea and sickness.

Migraines are a prevalent health condition that affects 1 in 5 women and 1 in 15 men. It is common for them to begin in early adulthood; however, they can also start earlier than this. Some people experience frequent migraine headaches several times a week, while others may go years between episodes.

The exact causes of migraines remain unknown, but they are believed to result from chemical, nerve and blood vessel changes in the brain. Many sufferers report triggers such as stress or dietary factors. Almost half of those with migraines have a family member or close relative who suffers from the condition, suggesting genetic links as a potential cause.