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.