Abstract

Onychomycosis (OM), has a worldwide prevalence of 5% and 0.5%-5% in India. Trichophyton. rubrum (T rubrum) and T mentagrophytes are the most commonly isolated fungi. As the clinical and mycological characteristics change with time and geographical region; it is important to study the temporal and topographic patterns periodically. The study was conducted to identify the epidemiological and clinico-mycological characteristics of patients with OM attending a tertiary care hospital in Delhi. Hundred patients with clinical diagnosis of OM were recruited. Among these, 88 patients who tested positive for OM on direct microscopy with KOH, culture and/or histopathology with periodic acid-Schiff were included in the study. The clinico-mycological characteristics and risk factors associated with OM were evaluated. OM was more common in males (M:F=2.5:1). The mean age of patients with OM was 39±15.3years (SE 1.52) with mean disease duration of 27.6±46.1months (SE 4.9). Seventeen (19.3%) patients had concomitant diabetes mellitus. The patients displayed mean body mass index (BMI) of 25.67±1.35kg/sq m. Concurrent dermatophytosis of skin was present in 35 (39.77%) patients. Two feet-one hand syndrome was present in 5 patients. Fingernail involvement without toenail involvement was more common than toenail involvement alone. (43.18% vs 38.63%). Distal and lateral subungual OM (DLSO) was the commonest clinical variant (81.8%). Mycological culture showed growth in 47 (53.40%) patients. Dermatophytes were isolated in majority, that is in 30 (63.82%) patients followed by non-dermatophytic moulds (NDM) in 7 (14.8%) and Candida spp. in the remaining 10 (21.27%) patients.

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