Headache is a common clinical symptoms, usually confined to the upper half of the head, including the eyebrow, the upper edge of the ear and occipital extension of the connection above the pain of the site collectively referred to as headache.there are many reasons may cause headache , neuralgia, intracranial infection, intracranial space lesions, cerebrovascular disease, extracranial head and face diseases, and systemic diseases such as acute infection, poisoning, etc. can lead to headaches. Age of onset common in young, middle-aged and elderly.
