Patients are sometimes offered a type of biofeedback called EMG training, in which they learn to control muscle tension in the face, neck, and shoulders. Some scientists theorize that people who suffer from severe headache have lower levels of endorphins than people who are generally pain free. Their release is triggered by the dilation of arteries. Prostaglandins are extremely potent chemicals involved in a diverse group of physiological processes. The infection leads to inflammation of these cavities, causing pain and sometimes headache.
Symptoms are headache and intense facial pain that comes in short, excruciating jabs.
Migraine is a type of vascular headache. The National Institute of Neurological Disorders and Stroke of The National Institutes of Health. NIH Publication No. Hope Through Research . Last updated August 31, 1999.