假性球麻痹、弥散性脑动脉硬化、肌萎缩侧束硬化,麻痹性痴呆和老年性精神病等患者可有强迫性笑的症状。但以不自主的发作性笑为主要症状的癫痫病例尚少报道,对其病变定位的认识亦不一致。现将我们所见4例报道的如下。例1 男,12岁,因不自主的发作性笑4月余,于1963年4月入院。患儿于4个月前出现无原因的不自主的发作性哈哈大笑。初数日一犯,每次持续数分钟,笑后有时能回忆:当时面部在笑,心里不想笑,有时则全然不知。笑前无先兆,事后无不适。两个月 Pseudobulbar palsy, diffuse cerebral arteriosclerosis, amyotrophic lateral sclerosis, paralytic dementia and senile mental illness and other patients may have obsessive-compulsive laughter symptoms. However, the main symptoms of involuntary onset of laughter are rarely reported in epilepsy, and their understanding of the location of the lesion is also inconsistent. Now we see 4 cases reported below. Example 1 Male, 12 years old, due to involuntary sexual assault More than 4 months, in April 1963 admitted. Children 4 months ago, there is no reason for involuntary onset of laughed. The first few days on a guilty, each lasting several minutes, after the laughter can sometimes recall: when the face is laughing, I do not want to laugh, sometimes completely unknown. No aura before laughing, no discomfort afterwards. Two months