#Headache is pain or discomfort in the head, scalp, or neck. The most common symptom is a dull, sharp, or throbbing pain in one or both sides of the head. The pain may be mild, moderate, or severe. Some people feel pressure or tightness around the forehead or back of the head. In some types of headache, other symptoms also appear. A person may feel nausea (feeling like vomiting), vomiting, sensitivity to light (photophobia), or sensitivity to sound (phonophobia). The person may prefer to rest in