Case #1

A 10-year-old boy presents with an asymptomatic rash on his torso that has been waxing and waning for the past 3 months. He is otherwise healthy, takes no medications, and has met all milestones of development. His parents report that none of his siblings have a similar rash. Physical examination reveals a generalized eruption consisting of 5- to 12-mm predominately hypopigmented, scaly macules scattered across his trunk; his face and distal extremities are relatively spared. No lymphadenopathy or associated constitutional symptoms are found.

Can you diagnose the condition in Case 1?

A. Pityriasis rosea
B. Pityriasis lichenoides chronica
C. Pityriasis lichenoides et varioliformis acuta
D. Febrile ulceronecrotic Mucha-Habermann disease

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