MRCP UK EXAMINATIONS

CLINICAL ENCOUNTERS

PSORIASIS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

The main clinical characteristic of acne vulgaris is the comedon, what could it be?

A	Open
B	Closing
C	Both
D	None

Explanation:

Detailed explanation-1: -Acne vulgaris is characterized by comedones, papules, pustules, and nodules in a sebaceous distribution (eg, face, upper chest, back). A comedone is a whitehead (closed comedone) or a blackhead (open comedone) without any clinical signs of inflammation. Papules and pustules are raised bumps with inflammation.

Detailed explanation-2: -Acne vulgaris is the formation of comedones, papules, pustules, nodules, and/or cysts as a result of obstruction and inflammation of pilosebaceous units (hair follicles and their accompanying sebaceous gland). Acne develops on the face and upper trunk. It most often affects adolescents. Diagnosis is by examination.

Detailed explanation-3: -They are of two types, open and closed. Open comedones are due to plugging of the pilosebaceous orifice by sebum on the skin surface. Closed comedones are due to keratin and sebum plugging the pilosebaceous orifice below the skin surface.

There is 1 question to complete.