１　患者，女，３７岁，无职业。于１９９７年６月始，每于触碰右侧食指桡侧甲沟处即有同侧上肢麻木感出现，且麻木难忍，不伴意识障碍，肢体活动自如，无抽搐。每次发作均持续了３～５分钟症状骤然消失。不触碰右侧食指桡侧甲沟处无上述症状发生。患者既往健康，无外伤等病史? 1 patient, female, 37 years old, unemployed. Beginning in June 1997, every touch on the right side of the radial crest of the index finger at the ipsilateral upper limb numbness occurs, and numbness unbearable, without disturbance of consciousness, limb mobility, no convulsions. Each attack lasted 3 to 5 minutes the symptoms suddenly disappear. Do not touch the right index finger at the radial side of the groove without the above symptoms. Past patient’s health, no history of trauma?