克山病是一种原因不明的地方性心肌病。主要发生在我国境内,在我国已有一百多年的流行历史。自1935年在我国黑龙江省克山县及其邻近突然爆发一种以心肌病变为主的、原因不明的、死亡率很高的地方病以来,至今已有15个省、区流行发生。目前病情仍较重的有陕西、四川、云南、黑龙江、吉林、内蒙古,近年每年发生急型、亚急型克山病人数百例;现症 Keshan disease is an unknown cause of endemic cardiomyopathy. Mainly occurred in our country, in our country has a hundred years of popular history. Since 1935, in Kanshan County, Heilongjiang Province, China, a sudden endemic disease with predominantly cardiomyopathy, unexplained and high mortality rate has occurred in 15 counties and districts in the country. Currently there are still serious cases of Shaanxi, Sichuan, Yunnan, Heilongjiang, Jilin, Inner Mongolia, in recent years, acute, subacute Keshan patients hundreds of cases;