Headaches have a variety of causes. The most common types of headache are migraine (which are frequently disruptive) and tension-type headache. They can range from bothersome to disabling. Occasionally, they are caused by dangerous problems.   Patients who have sought care for headaches but have n0t found relief should not be discouraged. At The Headache Center, experienced neurologists take a comprehensive approach to headaches. Educating patients is important, because it allows for shared treatment decisions between patient and physician.   Neurologists at The Headache Center are experts in diagnosing and treating headache. Physicians are members of the American Headache Society and the American Academy of Neurology. They conduct ongoing research on headache treatment.