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Dermatology Quiz

Scarring alopecia with tufted folliculitis

Fig 1. Scarring alopecia
Figure 1. An irregular area of scarring alopecia on the vertex of the scalp.

A 34-year-old woman presents with an 18-month history of progressive hair loss, associated with tenderness, on her scalp. Tufted follicles and scarring alopecia were the key to diagnosis.

Skin necrosis with vascular calcification

Fig 1. Skin necrosis
Figure 1. Irregular areas of skin necrosis with dark eschar over the lower leg.

A 59-year-old woman with chronic renal failure presents with a recent history of multiple progressive, painful ulcers over the lower limbs.

Itchy papules on the trunk and limbs

Fig 1. Itchy papules
Figure 1. Multiple pale pink papules at different stages. Note the hyperpigmented areolae, increased skin markings (lichenification), and focal dark crust.

A 47-year-old woman developed persistent itchy papules on the trunk and limbs over a two-year period.

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