Peer Reviewed
Dermatology clinic

A longstanding palmar lesion and nail dystrophy

Andrew Lee, Gayle Fischer
Test your diagnostic skills in our regular dermatology quiz. What is the cause of this boy’s palmar lesion and dystrophic thumbnail?
Key Points
    Case presentation

    An 8-year-old boy presents with a scaly erythematous lesion on his left palm that has been present for six months (Figure 1). His thumbnail of the same hand became dystrophic four months ago (Figure 2).

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