Encyclopedic reference provides coverage of every aspect of every clinically discrete type of headache--from the ubiquitous tension headache to the neurologically complicated headache associated with life-threatening cerebrovascular disorders. Offers clinicians a systematic approach to rapid diagnosis and optimal management, as well as an enhanced appreciation of the anatomy, physiology, pathophysiology, and biochemistry of the cephalic circulation and pericranial muscles; the psychological dimensions of headache; and the rationale underlying pharmacologic and nonpharmacologic prophylaxis and palliation. For each headache type, the book details the etiology; signs and symptoms; physical, neurologic, imaging, and laboratory findings; and treatment options. Complete information is provided on the entire current pharmacologic armamentarium--including the new serotonin agonist, sumatriptan--and on psychological, behavioral, and other nonpharmacologic interventions. Management is.