1984年在吉林省德惠县内调查了100,234名乡镇人口,发现银屑病病人421例,患病率为4.2‰,是较高患病地区之一。对421例病人发病情况进行了分析,重点分析了家族发病情况。421例病中有家族发病者100例,占23.75％。通过此100例家族谱分析,不符合单基因遗传规律,具有多基因遗传特点。除遗传因素外,环境因素对本病发生也有一定作用。 In 1984, a survey of 100,234 towns and villages in Dehui County, Jilin Province found 421 cases of psoriasis with a prevalence of 4.2 ‰, making it one of the more affected areas. The incidence of 421 patients were analyzed, focusing on the analysis of the incidence of the family. There were 100 familial cases in 421 cases, accounting for 23.75%. Through this 100 cases of family tree analysis, does not meet the single-gene inheritance, with multiple genetic characteristics. In addition to genetic factors, environmental factors also have a role in the occurrence of this disease.