Cyanosis is the appearance of a blue or purple coloration of the skin, nails or mucous membranes due to the tissues near the skin surface having low oxygen saturation. Cyanosis is classified into central cyanosis and peripheral cyanosis.

     Central cyanosis: Bluish coloration of the lips and tongue.

     Peripheral cyanosis: Bluish coloration to the toes, palms, and the fingernails.


Activity allows the user to determine the color of the skin, mucous membrane, nail beds, lips.



Simulation Type

Condition, Using Real photos

Gender Specific


Condition Simulated

     Cyanosis Negative

     Cyanosis Positive


     Click on the desired marked parts (A-Central Cyanosis (mouth), B-Peripheral Cyanosis (hands and leg) ) to check the Cyanosis.

     The selected parts will appear in a small window on the central screen.

     One can view the zoomed version of the part by dragging the slider ‘Zoom Level’.