A 10-year-old boy presents with a painless skin eruption affecting his neck.
Dermatology Quiz
A child with sudden onset of dry, hyperpigmented skin

Figure. The eruption on the boy’s neck.
A pregnant woman with a pruritic eruption

A pregnant woman presents with an intensely pruritic eruption.
A child with severe wrinkling of the skin of the palms

Figure. The girl’s wrinkled palms after exposure to a stream of tap water.
A 12-year-old girl presents with rapid and severe skin wrinkling that affects her palms after exposure to a small amount of water.
A pruritic rash in a traveller

A 45-year-old man presents with an intensely pruritic rash.
A severe erythematous eruption with associated exfoliation

A 56-year-old man presents with a severe erythematous eruption with associated exfoliation.
An elderly woman with a hand rash and chest wall lesion

An elderly woman presents with a painful hand rash and isolated chest wall lesion.
A man with erythematous and swollen hands

A 45-year-old man presents with a two-day history of progressive erythema and swelling affecting both hands.
A 6-month-old boy with a vesicular rash

A 6-month-old boy presents with a vesicular rash.
A rash on the forearms of a hospitalised patient

Figure 1. Hyperpigmentation of the patient's forearms with sparing of the skin under his watch.
A 70-year-old man develops an erythematous, hot and itchy rash on his forearms while in hospital.
A photodistributed rash in a malnourished patient

A 48-year-old woman presents with a photodistributed rash.