A pressure injury is also known as a bedsore or pressure ulcer. Pressure injury is damage that occurs on the skin and underlying tissue. Inactivity, friction, poor nutrition and moist wet skin are common causes. The most common places for pressure ulcers to develop are over bony areas such as heels, ankles, elbows, hips, shoulders, and the lower back.
Pressure injuries are caused by a lack of blood supply to an area of skin. These injuries begin as a reddened area on the skin and can become an open sore. They can occur from intense pressure over a lengthy period of time or less pressure over a long period of time