MCQ – 87437

Callosities/ ill-defined thickening at the site of constant friction comes under?

A.	Inherited Palmoplantar Keratoderma
B.	Acquired Palmoplantar Keratoderma
C.	Epidermolysis Bullosa
D.	Icthyosis

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Correct Answer � B Explanation

Callosities are a type of Acquired Palmoplantar Keratoderma.

Etiology: develops at the site of constant/repeated pressure/friction. Commonly seen due to:

• Occupation, on palms, e.g., of a manual laborer.
• Ill-fitting footwear, on soles.
• Prosthesis, on stumps of amputees.
• Recreation: golf club on palms.

Clinical features: ill-defined area of yellowish thickening of palms/soles (Fig. in question).
Usually asymptomatic.