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Archive for December, 2011

A 47-year-old woman developed over a two-year period persistent itchy papules on her trunk and limbs. Each lesion had a firm pale pink central papule and a hyperpigmented margin which faded into the surrounding skin. Some of the papules had a central crust and the skin markings were accentuated.

Skin biopsy showed an irregularly hypertrophic epidermis with a central crater associated with scant lymphocytic inflammation and superficial dermal fibrosis.

Differential diagnosis

The differential diagnosis of these irritable papules includes the following. Read the rest of this entry »