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Introduction[edit | edit source]
The word cyanosis derives etymologically from the greek word kyanos, that means dark blue color. Cyanosis is the condition when the skin or the mucous membranes turn blue. The differential diagnosis of cyanosis can be difficult because there are many possible causes for this condition. [1]
Peripheral cyanosis in the fingers.
Presentation[edit | edit source]
Cyanosis can be best appreciated in areas with rich superficial vasculature and thin overlying dermis. In fact,the parts of the body most commonly affected are:
- lips
- tongue
- gums
- skin
- ends of fingers, toes and earlobes
for dark skin, cyanosis may be easier to see:
- on the lips, tongue and gums
- ends of fingers
- around the eyes[2][3]
Cyanosis can be classified as central, peripheral, and differential.
Causes[edit | edit source]
Cyanosis is a pathologic sign taht does not represent a disease by itself. Cyanosis can mean that there is not enough oxygen in the arterial blood [