Question

which of the following is an abnormal change in skin color?
check all that apply
cyanosis
erythema
sun tan
pallor
impetigo

Explanation:

• Cyanosis: It is a bluish - purple discoloration of the skin and mucous membranes due to reduced oxygenation of blood. This is an abnormal change in skin color.
• Erythema: It is redness of the skin caused by increased blood flow in superficial capillaries. It can be due to various abnormal conditions like inflammation, allergic reactions etc.
• Sun tan: It is a normal physiological response of the skin to protect itself from ultraviolet radiation by increasing melanin production.
• Pallor: It is a paleness of the skin due to reduced blood flow or hemoglobin levels. It is an abnormal change.
• Impetigo: It is a bacterial skin infection. While it can cause skin changes like red sores etc., it is mainly a skin infection rather than just a color change in the sense of the other terms (but the redness associated with it can be considered an abnormal color change in the context of skin color alterations due to pathology).

Answer:

Cyanosis, Erythema, Pallor, Impetigo