Mildly pruritic elbow and knee plaques

A girl aged 12 years presented with a six-month history of enlarging red plaques on bilateral elbows and knees. She was otherwise healthy and had no history of recent infections.

The lesions were associated with mild pruritus, which was not keeping her up at night. There was no family history of atopic dermatitis, allergic rhinitis, or asthma. No prior treatments had ...