Dermatophyties à Trichophyton violaceum au laboratoire de parasitologie mycologie de l’HMMI de Mekhnès (à propos de douze cas)

The objective of this work is to study the clinical and epidemiological profile of T. violaceum infections. Material and methods This is a descriptive retrospective study of a series of twelve cases of T. violaceum dermatophytosis diagnosed among patients referred to our laboratory for suspicion of dermatomycosis during a period from January 2011 to December 2016. The diagnosis was based on the positivity of direct examination and culture, and the identification of our strains on the macroscopic and microscopic characteristics of the colonies. Results The mean age at diagnosis was 8.6 years with a sex ratio of 2. Tinea capitis (TC) was the most frequent clinical aspect (75 %), followed by onychomycosis (25 %). Among the TC, trichophytic tinea was predominant (66.7 %). Besides, we observed a case of pustulo-inflammatory tinea. Direct examination was positive and showed an endothrix pilar parasitism in all cases. Discussion The clinical expression of dermatophyties to T. violaceum is polymorphous. The TC is the most frequent as reported in the literature. However, kerion and onychomycoses of feet were rarely described in association with this dermatophyte, hence the importance of the mycological examination allowing to support the diagnosis of a misleading clinical lesion.
Source: Journal of Medical Mycology - Category: Biology Source Type: research