Which stage of a pressure sore is characterized by redness of the skin?

In the context of pressure sores, Stage 1 is specifically defined by the presence of non-blanchable erythema, which is the medical term for redness of the skin that does not fade when pressure is applied. This stage indicates that the skin is intact but shows signs of potential injury due to pressure. The redness is often a result of increased blood flow to the area as the body attempts to respond to the pressure. Identifying a pressure sore at this early stage is critical because it allows for timely interventions that can help prevent the progression to more severe stages of pressure injury, which involve more extensive tissue damage and loss.

In contrast, other stages of pressure sores involve additional symptoms and more severe tissue damage. Stage 2 involves partial thickness loss of skin and may present as a blister or abrasion. Stage 3 indicates a full thickness loss of skin that may extend into the subcutaneous tissue, while Stage 4 indicates extensive destruction, tissue necrosis, or damage to muscle, bone, or supporting structures. Recognizing the characteristics of each stage aids healthcare providers in effective assessment and management of pressure injuries.