This document defines pressure injuries and discusses their causes, risk factors, prevention, and staging. It notes that pressure injuries result from constant pressure that impairs blood flow to soft tissues over bony areas. The main risk factors are impaired mobility, incontinence, and malnutrition. Prevention focuses on pressure relief through devices, positioning, and skin care. Pressure injuries are staged based on tissue damage depth, from non-blanchable redness to full thickness tissue loss. Incontinence-associated dermatitis involves skin damage from urine and stool exposure.