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JAMA Dermatology Clinicopathological Challenge
August 5, 2020

Erythematous Nodule With Central Crust on the Nail Fold in an Infant

Author Affiliations
  • 1Department of Dermatology, Son Llàtzer Hospital, Palma de Mallorca, Mallorca, Spain
JAMA Dermatol. 2020;156(9):1016-1017. doi:10.1001/jamadermatol.2020.2406

A girl younger than 2 years presented with a 7-month history of an inflammatory plaque on her left index finger (Figure, A). This lesion had started as a light erythema a few months before, initially oriented as a bacterial paronychia or herpetic whitlow and treated with an oral antibiotic (amoxicillin) and antiviral (acyclovir) without improvement. There was no relevant medical history. The family reported living in a rural area on the Mediterranean coast.

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