A 52-year-old man presents with hyperpigmented skin on his hands, arms and legs.
Dermatology Quiz
Dermatology Quiz
A photodistributed rash and muscle weakness

Figure 1a. Erythematous plaques overlying the metacarpophalangeal joints (case patient).
A 52-year-old man presents with a photodistributed rash and pruritic papules on his hands and elbows.
An acute generalised blistering eruption

Figure 1a. Case patient. Crusted lesions on the posterior trunk.
A 54-year-old woman presents with an acute blistering eruption.
Recurrent painful intertriginous nodules

Figure 1. Multiple lesions in the groin (case patient).
A 32-year-old woman presents with painful intertriginous nodules.
Diffuse petechial rash in an unwell febrile patient

An unwell 65-year-old man presents with a diffuse petechial rash.
Persistent pruritic purple papules

Figure. Lesions on the dorsum and lateral surface of the patient’s right foot.
A 48-year-old woman presents with a history of itchy papules.
A progressive plaque on the lower limb

Figure. The plaque on the patient’s leg. Note the central ulceration and elevated peripheral violaceous rim.
A 52-year-old woman presents with a yellow-red telangiectatic plaque on her leg.
Recurrent, painful nodules on a girl’s legs

A 10-year-old girl presents with painful, red nodules on her legs.
Rapid onset of erythroderma in a 65-year-old man

Figure 1. The rash on the patient’s arm.
A 65-year-old man presents with erythroderma.
A rapidly progressing, blistering eruption in a febrile patient

Figure. The case patient’s maculopapular eruption in various stages of evolution. Vesicular crusting lesions on an erythematous base are visible.
A 32-year-old woman presents with fever and a blistering eruption.