Cyanosis refers to abnormal blue discoloration of the skin and mucous membranes. The term is derived from the Greek word kuaneos meaning dark blue. In normal humans blood protein called hemoglobin ...

Cyanosis is a symptom of an underlying disease rather than a condition or disease in itself. Cyanosis refers to the bluish discoloration of skin, lips, fingers and toes and mucous membranes. There are ...

Central Cyanosis in Acquired Methemoglobinemia Authors: Pankaj Das, M.D., and Gautam Singh, M.D. Author Info & Affiliations Published April 10, 2024 N Engl J Med 2024;390: 1311 ...

Peripheral cyanosis affects the fingers and toes. It happens when the body is not able to pump oxygen-rich blood to those areas, whether due to the cold or a health condition. Cyanosis refers to a ...

If you have blue (or purple) fingernails, it’s often a sign that your blood is low in oxygen. Low oxygen, called cyanosis, may be due to numerous lung, heart, blood vessel, and blood cell disorders.

Bluish discoloration of the skin may signal a lack of oxygen in the blood. It could also indicate an abnormal form of hemoglobin (a protein in red blood cells) like it does with sickle cell anemia.