美国国立卫生研究院心、肺、血液研究所提醒大家，血压过低的常见病因主要包括：

１、心功能不全，以致心排血量不足可致血压过低；

２、贫血；

３、重症感染；

４、甲状腺功能低下，糖尿病或艾迪森氏病（Addison's disease）；

５、帕金森氏病

６、肺动脉栓塞。

(HealthDay News) -- While high blood pressure is the more common medical issue, people can also have low blood pressure, medically called hypotension.

The National Heart Lung and Blood Institute mentions these possible causes:

１、A heart condition that reduces blood flow to the rest of the body.

２、The blood disease anemia.

３、A significant infection.

４、A thyroid problem, diabetes or Addison's disease.

５、Parkinson's disease.

６、A blocked lung artery (pulmonary embolism).