患者女,24岁。以发作性眼花、视物旋转、无力于1983年2月就诊。患者,双眼畏光。查体无异常所见。追问病史,12年前因凝视电焊弧光后眼花、眼痛、头晕、无力。此后每遇强光症状出现,经闭目休息后自行缓解。近半年来发作频繁且加重,连续3次出现晕倒及小便失禁。发作后感四肢发硬,双目发呆。婚后2年内因强光刺激先后流产3次。脑电图:左、右两侧以8.5～9c/s 30～100mV“α”节律为主 Female patient, 24 years old. In order to attack the onset of vertigo, depending on the material rotation, unable to visit in February 1983. Patients, both eyes photophobia. No abnormal findings. History of the question, 12 years ago because of staring arc welding dazzled, eye pain, dizziness, weakness. After each case of glare symptoms appear, relieve themselves after resting eyes closed. Almost half of the seizures and aggravating, fainting and urinary incontinence for three consecutive times. Sense of attack after the limbs stiff, eyes dull. 2 years after marriage due to glare stimulation has aborted 3 times. EEG: left and right sides to 8.5 ~ 9c / s 30 ~ 100mV “α” rhythm based