Cyanosis
Cyanosis is a severe condition associated with inadequate
oxygen in the blood supply.
As we breathe our lungs take in oxygen that goes into our
blood. Sometimes, the body has trouble getting enough oxygen into its cells.
This can be due to various severe illnesses that inhibit circulation or oxygen
intake for example, a lung or a heart problem. Then cyanosis can occur,
causing the skin, inside of the mouth, lips or fingernails to turn a bluish
colour. A form of localised cyanosis can also occur in areas of poor
circulation, such as the hands and fingers.