What causes a decubitus ulcer? Prolonged pressure is essentially the main cause of a decubitus ulcer with other factors such as moisture, poor circulation, and poor nutrition contributing. Lying on a certain part of your body for long periods may cause your skin to break down.

Why do bedsores occur?

What causes bedsores? A bedsore develops when blood supply to the skin is cut off for more than 2 to 3 hours. As the skin dies, the bedsore first starts as a red, painful area, which eventually turns purple. Left untreated, the skin can break open and the area can become infected.

What is the major cause of pressure ulcers?

Pressure ulcers (also known as pressure sores or bedsores) are injuries to the skin and underlying tissue, primarily caused by prolonged pressure on the skin. They can happen to anyone, but usually affect people confined to bed or who sit in a chair or wheelchair for long periods of time.