History and Objectives: Due to prevalence of cutaneous ulcers, different reports about their etiologic and drug resistance and worriment about contagiousness of the infectious cutaneous ulcers in warm and wet weather of Golestan province, this study was conducted to identify the bacterial and fungal microorganisms that produce cutaneous ulcers and their drug resistance in children younger than 10 years old referring to outpatient clinics to physicians in three cities in 1377.

Materials and Methods: A descriptive study was performed. After definitive diagnosis of cutaneous ulcers, specimens were collected by the physicians and cultured on specific culture media and the bacteria and fungal type was recognized through standard examinations. Then their resistance and sensitivity to the usual antibiotics were determined.

Results: Specimens were provided from 270 children less than 10 years old during a 6-month period. Bacteria were grown in 98 patients (36.6%) and in 105 children (59.6%) fungi were the etiologic agents. In 11 cases (4.1%) no microorganism was grown. Gram-positive bacteria were most resistant to penicillin, ampicillin and amoxicillin and least resistant to vancomycin and erythromycin. Gram-negative bacteria were most resistant to ampicillin and cephalexin and least resistant to kanamycin. The most common bacteria, dermatophyte and Candida were Staphylococcus, Microsporum canis and Candida albicans respectively.

Conclusion: The predominant bacterial and fungal pathogens were not observed in this study. Most of the bacteria were normal body flora and the prevalence of Microsporum canis is due to the presence of animal host in rural areas.