Dermatosis frequency evaluation in the ambulatorial attendance of dermatology.

The objective was to evaluate the prevalence of skin diseases in patients seen at the Dermatology outpatients' clinic of the Santa Casa de São Paulo during the period from June to October 2005, comparing the results with a similar survey conducted at the same center in 1977. During the period of study, the electronic medical charts of 3011 patients seen in a first visits were analyzed.