Diaper dermatitis(Diaper rash) is the most common cutaneous disorder of infancy and childhood. Although the etiology of this condition remains unknown, an amalgam of various causes (mechanical friction, moisture, contact with urine and feces, variation of skin pH, fungal infection) bring about this common dermatitis. Because most diaper dermatitis is treated conservatively at home, the frequency is unknown, but from 7%-35%
   up to 50% has been reported. Therefore the frequency of diaper dermatitis and related aggravating factors in 1-2 years old children was studied at nursing home of Hamadan at year 2000-2001.

          The study was cross-sectional, descriptive on 385 children usingrandomized selection and data was collected by questionnaire and completed by direct observation.

          In this study 79 (20.5%) subjects had diaper dermatitis, there was meaningful association with” educational level of mother, age of child and use of disposable diaper(p<0.05)” . There was no meaningful relation with sex. The most prominent region of involvement was combination of perineum –genitalia-buttock-thighs.

          For better controlling of diaper dermatitis we should consider the proper health education for mother and nursing home instructors, and using of super absorbent diapers.