A multicentric clinical and epidemiological study of chronic and recurrent dermatophytosis in India.

BACKGROUND: There has been an alarming increase in the prevalence of chronic, recurrent and steroid modified dermatophytosis of the glabrous skin in the recent years in India. There is paucity of literature on the magnitude of this major public health problem. OBJECTIVE: To estimate the prevalence of dermatophytosis and clinico-epidemiological features of chronic and recurrent dermatophytosis (CRD) across India and to evaluate the associated risk factors. METHODS: This is a multicentric descriptive cross-sectional study conducted in 13 centres situated across India in two phases during dry and rainy seasons. All consecutive patients presenting with dermatophytosis were screened during the study period of 14 consecutive working days. Patients with CRD of the glabrous skin as per the case definition were included after exclusion of isolated hair and nail infections. Demography, clinical findings and results of potassium hydroxide wet mount were recorded. RESULTS AND CONCLUSION: A total of 41,421 patients were screened, out of which 7174 (17.31%) patients had glabrous dermatophytosis. CRD was observed in 1999 (27.86%) patients with 78.08% and 21.95% of chronic and recurrent dermatophytosis, respectively. Family history was present in 50.03% of patients. History of sharing of fomites was present in 50.37% of them. Synthetic tight clothes were worn by 43.47%, while 50.9% gave history of misuse of topical corticosteroid creams. Multiple site involvement was common (69.58%) with tinea cruris (79.99%) and tinea corporis (75.69%) being the most common clinical types. CRD is associated with sharing of fomites, topical corticosteroid misuse and involvement of multiple sites.