Headache or cephalalgia means pain located anywhere in the head. There are many types of headaches with multiple different etiologies. Among the different types of headaches, ones of the most common are migraine headaches and tension type headaches. Migraine headaches are usually characterized by severe pain on one or both sides of the head, at times accompanied with upset stomach and sensitivity to light and noise. Women are more likely than men to have migraine headaches.
Like other types of pain, headaches can serve as warning signals of more serious disorders and should be evaluated by a specialist.