What is cap cyanosis typically characterized by?

Cap cyanosis is characterized by a deep blue color of the face and chest, indicating a lack of oxygen in the blood. This bluish tint occurs when deoxygenated hemoglobin in the blood rises to significant levels, typically during periods of hypoxia or respiratory distress. The bluish hue is most noticeable in areas where the skin is thinner, such as the face, especially around the lips and eyes, and can also be present on the chest. This condition is a clear visual indicator of inadequate oxygenation and often prompts further assessment and intervention to address underlying respiratory or circulatory problems.

The other options describe different skin colors that do not reflect hypoxia: red discoloration usually indicates inflammation or irritation; yellow pallor suggests jaundice, possibly due to liver issues; and a greenish tint could imply conditions like certain types of poisoning or blood disorders but is not associated with cyanosis.