Objective: to investigate prevalence of superficial mycoses at the National Hospital of Dermatology and Venereology (NHDV). Method: case series study based on retrospective data of 39763 patients at NHDV from 1/1/2009 to 31/12/2011, who were diagnosed as fungus infections of the stratum corneum (dermatophytes), tinea vesicolor, tinea unguium, and tinea capitis. Results: of the total patients examined at NHDV, superficial mycoses were accounted for 6.6 percent, including dermatophytes 5.18 percent, tinea vesicolor 1.04 percent, tinea unguium 0.32 percent, tinea capitis 0.033 percent. Among total cases of superficial mycoses, male/female ratio was 1.8
patients aged from 15-34 accounted for 61.9 percent, students 35.9 percent. Dermatophytes, tinea vesicolor, and tinea unguium were most common in the age group of 15-34 years (62 percent, 63 percent, and 51 percent respectively), tinea capitis was most diagnosed among children under 5 years of age (87 percent). The diseases occurred throughout the year, but increased in summer and autumn. Conclusion: superficial mycoses were relatively common among skin diseases, more frequent among male patients, adoloescents and young adults, increased in summer and autumn.