克山病是一种地方性心肌病。1935年在黑龙江省的克山县首次认识本病以来,越来越多的地方发现有本病存在。这些病区成灶状或片状分布于我国东北～西南走向的一个带状区内。 克山病主要见于农村,农业人口中多见,儿童最易受累。在北方一些地区育龄妇女亦常罹患。 临床上把克山病分为四个类型,即急型、亚急型,慢型和潜在型。急型发病急骤,以心 Keshan disease is a endemic cardiomyopathy. In 1935 in Keshan County, Heilongjiang Province for the first time since the understanding of the disease, more and more places have found the existence of the disease. These ward lesions or flaky distribution in northeast China ~ southwest of a strip of zone. Keshan disease is mainly seen in rural areas, more common in the agricultural population, the most vulnerable children. Women of childbearing age are also often affected in some areas in the north. Keshan disease is clinically divided into four types, namely acute, subacute, slow and latent type. Urgent acute onset, with heart