reasons why people can get a headache
There are three main causes for primary headaches: 1  Migraine - Migraine headaches can be caused by reduced blood flow to various areas of the cerebral cortex. Symptoms of migraines include sensitivity to light and noise, nausea, vomiting and intense throbbing pain that is usually on one side of the head.
Migraine tends to affect people between 15-55 years of age. Some people who suffer from migraines can clearly identify triggers or factors that cause the headaches such as allergies, light and stress. Some people get a warning prodrome, preceding the onset of a migraine headache.