Onychomycosis caused by Fusarium dimerum

Fusraium is a non-dermatophytic hyaline mould found as soil saprophytes and plant pathogens. Human infections are probably a result of various precipitating predisposing factors of impaired immune status. Immunocompetent individuals of older age group are also vulnerable to various unassuming saprophytic and plant pathogen. We report 5 cases with onychomycosis caused by a rare species of Fusarium, namely, Fusarium dimerum. Fusarium is known to cause a variety of infections like keratitis, eumycetoma, onychomycosis, skin lesions and sometimes disseminated infection in individuals with impaired immunity. Hence it is of utmost importance to identify this newly emerging fungal pathogen correctly and institute appropriate treatment to control human infections at the earliest so that disseminated infections can be avoided.