Abstract for my final degree project Different factors such as reduced mobility, malnutrition and incontinence increase the development of dependent skin lesions. These factors are often founds in dependent elderly persons dependent of third persons like caregivers. So its knowledge about dependence-related skin lesions prevention is very important, being able to interfere in the decrease of these lesions until a 98 %. The evaluation of level of knowledge of informal caregivers on skin lesions in dependent patients is considered. For it has been realized a descriptive observational study realized in the geriatric care unit of the General University Hospital of Ciudad Real. The target population were caregivers of patients. The sample size was 61 people. The questionnaire used for data collection was COCU-LCRD 23. The subsequent analysis was performed using Microsoft Office Excel 2007. The profile of the caregiver would be for women around the age of 50, with a family relationship, mainly daughters or sons, taking care over one year. The academic level is primary studies. More than half of the caregivers report having previous experience in the care of dependent patients, which mainly present respiratory and cardiovascular pathologies. More than ¼ of respondents manifested that the patients which they cared for had dependence-related skin lesions. The level of knowledge regarding the prevention of pressure ulcer of caregivers has been assessed, finding an adequate level of preparation, and a statistical relation with the academic level of the same. Keywords: Informal caregivers, dependence-related skin lesions, pressure ulcers, moisture-related skin lesions, knowledge, prevention.