According to Cedars-Sinai Medical Center, there are four stages of pressure injuries:
Stage 1. The area looks red and feels warm to the touch. With darker skin, the area may have a blue or purple tint. You may feel that it burns, hurts, or itches.
Stage 2. The area looks more damaged and may have an open sore, scrape, or blister. You have a lot of pain and the skin around the wound may be discolored.
Stage 3. The area has a crater-like appearance because of damage below the skin's surface.
Stage 4. The area is severely damaged and a large wound is present. Muscles, tendons, bones, and joints can be affected. Infection is a large risk at this stage.
Some pressure point injuries (bedsores) can be caused by the following:
- Being unable to move around easily due to old age or illness.
- Weight loss - you may have less padding over bony areas.
- Sliding down in a bed or chair - pressure on the skin cuts off blood supply because the skin is being pulled in different directions (called shearing)