Objective: To identify the frequency and factors associated to incontinence associated dermatitis in elderly people. Methods: Cross-sectional study with 202 elderly patients admitted to a university hospital between September 2017 and January 2018. Data collection included: cognitive screening, sociodemographic and clinical questionnaire. It was performed exploratory and descriptive analysis, where prevalence and ratios (PR) were calculated. Results: Prevalence of injury was 9.4%, age range 70-79 years (13.5%), African American (21.4%), hospitalization period ≥ 21 days (44.4%), in use of nasogastric tube (33.3%), medical device (11.3%), restricted mobility (18.5%). It was associated with hospitalization period, use of nasogastric tube, restricted mobility, medical devices, and cognition. Conclusion: It was confirmed an average frequency of incontinence associated dermatitis in elderly patients and association to factors such as hospitalization period, immobility, cognition, use of nasogastric tube and devices. It must be highlighted the importance of prevention measures, early detection, assessment and monitoring of this type of injury.