低钾性周期性麻痹为原发性周期性麻痹中最常见的一类。临床特征为反复发作的肌麻痹,伴有血清钾降低,无感觉障碍,间歇期一切正常。现将我院1981年4月至1988年8月收治的42例低钾性周期性麻痹分析如下。临床资料本组42例中男41例,女1例。年龄16～60岁其中40岁以下者31例占73.81％,病程最长为23年。发作频度不等,多则10天左右发作一次,最长间隔8年之久,每年发作1～3次者18例占42.86％。发病时间每年3～6月18例占42.86％,9～11月13例占30.95％。有家族史者5例占 Hypokalemic periodic paralysis is the most common type of primary periodic paralysis. Clinical characteristics of recurrent muscle paralysis, accompanied by decreased serum potassium, no sensory disturbances, all intermittent normal. Now in our hospital from April 1981 to August 1988 42 cases of hypokalemic periodic paralysis analyzed as follows. Clinical data 42 cases in this group, 41 males and 1 female. The age of 16 to 60 years of age in which 31 cases accounted for 73.81% of 40 years of age, the longest course of 23 years. The frequency of seizures ranged from up to 10 days or so once, with the longest interval of 8 years, with 1-3 seizures occurring in 18 cases, accounting for 42.86%. The onset time every year from March to June 18 cases accounted for 42.86%, 9-11 months 13 cases accounted for 30.95%. Family history of 5 cases accounted for