Epidemiological aspects of patients with ungual and cutaneous lesions caused by Scytalidium spp.

BACKGROUND

Dermatomycoses caused by non-dermatophyte filamentous fungi are rare infections, except for onychomycosis, whose prevalence has increased over the past few years. Among these etiologic agents, we highlight Scytalidium dimidiatum and S. hyalinum, emergent fungi that cause mycoses that affect the nails and skin.

OBJECTIVE

To investigate the characteristics of onychomycosis and other mycoses caused by the fungi Scytalidium spp, using sex, age and site of infection as parameters.

METHODS

Eighty-one samples were evaluated showing positive culture for Scytalidium spp, obtained from 74 patients referred to the Laboratory of Investigation in Dermatology (ID) located in the city of Rio de Janeiro, RJ, between 1997 and 2006. The samples were submitted to diagnostic confirmation through direct exam and culture.

RESULTS

The prevalence of onychomycosis caused by Scytalidium spp. was of 0,87%. The most prevalent age was between 41-60 years (48.64%). Regarding the site of infection, the feet (91.36%) were most affected, with predominance of the left hallux. Hyaline hyphae were the most common structures in direct examination and the species S. dimidiatum was the most frequent in culture.

CONCLUSION

Onychomycosis caused by Scytalidium spp. is rare and S. dimidiatum was the most isolated species in this laboratory during the period of the study.