Proximal subungual onychomycosis caused byFusarium falciformesuccessfully cured with posaconazole

Proximal subungual onychomycosis (PSO) is a fungal infection on the inner layer of the nail plate which starts from the eponychium and nail matrix.(1) Onychomycosis can be caused by a variety of dermatophytes, yeasts and non-dermatophyte molds (NDMs) including species of Aspergillus, Acremonium, Scopulariopsis, Chaetomium, and Fusarium.(2) Fusarium and Acremonium species require special attention, because of their intrinsically low susceptibility to most common antifungal agents and their ability to disseminate in severely compromised hosts, using the nail as a potential source of infection.(3,4) This article is protected by copyright. All rights reserved.