Pressure sores, also referred to as bed sores, are an injury to the skin and the underlying tissue. Bedsores can range from mild skin coloration to severe tissue damage and/or infection which can extend into muscle and bone. Pressure sores are described in four different stages:
STAGE 1: Sores are not open wounds, however, the skin may be painful, and the skin appears reddened. Skin temperature is often warmer. At stage 1, the bed sore can feel either firmer or softer than the surrounding area.
STAGE 2: The skin breaks, which is usually painful. The bedsore expands into the deeper layers of the skin. It can look like a scrape or blister on the skin. Sometimes this resembles a blister filled with clear fluid. At this point, some skin may be damaged beyond repair.
STAGE 3: The sore extends into the tissue beneath the skin, forming a small crater.
STAGE 4: The pressure sore is very deep, reaching into muscle and bone, causing extensive damage. Damage to the deeper tissue and joints may occur.