What Causes Cyanosis of the Lips?

Cyanosis (bluish discoloration) of the lips may indicate congenital heart disease or heart failure. It can also occur in patients with chronic obstructive pulmonary disease (COPD). To determine the underlying cause, you should visit a reputable hospital for diagnostic tests—such as echocardiography or pulmonary function testing—and then, under your physician’s guidance, receive targeted drug therapy and appropriate treatment.