Headache Headache is a pain in any area of the head. Headache may happen in one side or both them in head. Also, may come as a severe pain and incremental development or suddenly from pain, staying for few hours or several days. As writer Ian Fleming said :” His headache was still sitting over his right eye as if it had been nailed there”. Headaches are divided in two group: A primary headache means the headache itself is the main medical problem, although other factors, such as muscle tension or exposure to certain foods, may be identified. Other contributing factors include medicines, dehydration, or hormone changes{1}. B secondary headache is related to an underlying medical condition. An example of this would be a headache due
