Dec 19, · Cyanosis refers to a bluish cast to the skin and mucous membranes. Peripheral cyanosis is when there is a bluish discoloration to your hands . Cyanosis is when your skin turns blue or grayish in color because your blood isn't carrying enough oxygen. In some people, the color change may be more noticeable in the nailbeds or lips than elsewhere. When cyanosis occurs, it means your muscles, organs, and other tissues may not be getting the oxygen they need to operate properly.
Cyanosis is the medical term for a bluish color of the skin and the mucous membranes due to an insufficient level of oxygen in the blood. For example, the lips and fingernails may show cyanosis. Dec 08, · Cyanosis is a bluish hue to the skin, gums, fingernails, or mucous membranes caused by a lack of oxygen in the blood. When blood is fully oxygenated it appears bright red; when it lacks oxygen supply, the blood is a dark purple or bluish red.