The occurrence of mycotic infections has a rising tendency. Epidemiologic studies investigate this problem in adults. The problem is still insufficiently analyzed in children. The study is aimed at gaining information about the occurrence of mycoses evoked by dermatophytes and yeasts in children living in Slovakia, namely on the basis of the analysis of results for the mycological laboratory. From 1992 to 1993 6,511 samples which included 556 samples from children were processed on the basis of suspective dermatophytoses, the children being at the age of 1 to 15 years. 6,896 samples suspective of yeast infections included 3,620 mycologically positive samples. 279 samples were taken from 265 children at the age of 3 months to 15 years. 556 children with dermatophytosis included 116 mycologically positive cases, 64 boys and 52 girls. Microscopic examination was positive in 90 children and cultivation examination was positive in 85 children. Trichophytosis was confirmed in 38 children (32.8%) microsporiasis in 9 (7.8%), epidermophytosis in 50 (43.1%) and onychomycosis in 19 children (16.3%). Isolated antropophilic dermatophytes were represented most frequently by Trichophyton rubrum, 26 times, isolated zoophylic species included T. verrucosum, 15 times and T. mentagrophytes var. granulosum 13 times. 29 children (25%) had epidermophytosis and onychomycosis of feet. The group of 265 children with yeast infections included 123 with primary skin disease and 134 with internal disease. The most frequently monitored materials were stools, 147 times, and scrapings of the oral cavity, 78 times. The total number of isolated species of yeasts was 17. Candida albicans was isolated 218 times (78.2%). The total number of examinations included 7.1-8.5% of samples from children.(ABSTRACT TRUNCATED AT 250 WORDS)