患者,男,24岁。6年前反复出现左侧间歇性头痛,以前额、颞顶部为主,无鼻塞及脓涕,无鼻出血,自觉嗅觉减退,曾多次在本院及外院神经内科、耳鼻咽喉科就诊。多次行头颅CT及MRI、脑彩超检查,提示:脑血管痉挛。先后诊断为血管性头痛、偏头痛、鼻窦炎?但治疗效果不佳。2d前患者因左侧 Patient, male, 24 years old. Repeated six years ago left intermittent headache, forehead, temporal top of the main, no nasal congestion and purulent nasal discharge, no nose bleeding, decreased sense of smell, has many times in this hospital and the Department of Neurology, otolaryngology clinic. Multiple head skull CT and MRI, cerebral ultrasonography, suggesting: cerebral vasospasm. Has diagnosed as vascular headache, migraine, sinusitis? But the treatment effect is not good. 2d before the patient due to the left