Concomitant otomycosis and dermatomycoses: a clinical and microbiological study

Abstract.

Otomycosis tends to recur despite long-term treatment. To our knowledge, there is no study in the English literature concerning the clinical importance of concomitant otomycosis and dermatomycoses. We investigated the presence of dermatomycoses in 52 patients with otomycosis in order to document the clinical and microbiological importance of their coexistence. Dermatomycoses on the feet and/or hands were identified in 19 patients (36.5%). The most common pathogen for otomycosis was Aspergillus niger, while it was Candida albicans for the dermatomycoses. The same pathogenic fungi were isolated from the otomycosis and dermatomycoses in nine of the 19 patients (47.4%). Aspergillus niger was the most common shared pathogen. The pathogens isolated in concomitant dermatomycoses were common pathogens for the fungal infection of the ear (Aspergillus niger, Aspergillus flavus, Aspergillus fumigatus, Candida albicans). It was concluded that the autoinoculation of the ear canal by pathogenic fungi might be possible in the presence of the untreated dermatomycoses. Dermatomycoses must be investigated in patients with otomycosis and must be treated simultaneously in order to prevent the recurrence of both.