What is migraine?
Migraine is a common type of headache that can occur with symptoms such as nausea, vomiting, sensitivity to light. In many people, a throbbing pain is felt on one side of the head.
In some individuals migraine occurs with warning symptoms, called an aura before the actual start of headache. Aura is a group of symptoms, usually visual disturbances that serve as warning signs of a headache. However, some people have no warning signs such.
What are the causes of migraine?
Migraine is caused by abnormal activity of the brain, which is triggered by stress, certain foods, environmental factors etc. However, the exact chain of events remains unclear.
The headaches tend to occur first between ages 10 and 46. Occasionally, migraines may occur later in life a person with no history of such headaches. Migraines occur more often in women than men, and can run in families. Women may have fewer migraines when they are pregnant. Most women have fewer headache attacks over the last two trimesters of pregnancy.