Head pain distributed to different parts of the head.  Vasodilatation of blood vessels in tissues surrounding the brain or tension in neck and scalp muscles contributes to most headaches.  The causes can range from physiological, psychological, psychosomatic, or psychogenic.  It is considered to be one of the most common medical problems.

It is often categorized by location using the terms frontal, temporal, occipital, or vertex.  The pain may be dull t...more