克山病是一种原因未明,以心肌病变为主的全身性疾病。它是我国北方地区的地方病之一,因1935年在我国黑龙江省克山县境内发现该病,所以命名“克山病”。至今有关本病的病因有中毒、病毒感染和营养缺乏等三种学说,但均未能完全阐明其本质。临床上将本病按发病缓急及心脏机能状况分为潜在型、痨型和急型三类。潜在型的临床表现可能无症状,或感头晕,乏力,胸闷,恶 Keshan disease is a type of systemic disease with unclear causes and cardiomyopathy. It is one of the endemic diseases in northern China. Since it was discovered in Keshan County, Heilongjiang Province in China in 1935, it was named “Keshan disease.” So far, there are three kinds of theories about the cause of the disease: poisoning, viral infection, and nutritional deficiencies. However, the nature of the disease has not been fully elucidated. Clinically, this disease is classified into potential, delirium, and acute type according to the incidence of acute urgency and cardiac function. Potential clinical manifestations may be asymptomatic, or dizziness, fatigue, chest tightness, evil