ABSTRACT
The rate of superficial mycoses are increasing in special conditions. This retrospective study was conducted to determine the epidemiological parameters of Pityriasis versieolor and Erythrasma during 1994- 2011. In this study, we assessed the results of direct microscopic study and the other data of the patients for Pityriasis versicolor and Erythrasma in 1994-2011. Of 2265, 1294 [57%] suffered from pityriasis versicolor, who were mostly males [60%]. The highest frequency was related to 20-29 year old and the lowest to 0-9. High school and university students were the most infected groups [33%], September was the most common period and the most common site of involvement was chest and abdomen. The people infected with Erythrasma [971; 42%], were mostly 30 -39 year old, males [58%], urban [98%], reported in July and involved in groin. The frequency of both diseases was high in active age group, males, and the hot months of the year, which are the most common predisposing factors