To paraphrase Horton,1the fact that temporal arteritis occurs in patients of advanced age suggests that this disease may be one of the bitter fruits of senility. We recently had the opportunity to see a patient who harvested this fruit prematurely. We believe this represents the only case reported in a young person which was documented by biopsy material. Report of Case A 35-year-old Caucasian sailor was admitted to the US Army Tripler General Hospital because of severe left temporal headache of several hours' duration. Concomitantly, the patient noted throbbing and tenderness in the same area. In the previous two months, he had sustained a 12 lb (5.4 kg) weight loss, frequent night sweats, and intermittent pain in the left temporomandibular joint. Physical examination revealed a temperature of 98.2 F (36.8 C); pulse, 88; blood pressure, 100/82. A dilated, pulsating vessel, exhibiting redness and warmth, was noted in the