What classification of pressure ulcer is characterized by intact but reddened skin?

A Stage I pressure ulcer is characterized by non-blanchable erythema of intact skin. This means that the skin appears red and does not turn white (blanch) when pressure is applied. The area may also feel warmer or cooler than the surrounding skin and can be painful or itchy. This stage indicates that there is a risk of developing a more severe ulcer if pressure is not relieved, but the skin remains intact without any open wounds or damage.

In contrast, Stage II pressure ulcers involve partial-thickness loss of skin, which may present as an open sore, blister, or shallow crater. Stage III ulcers penetrate into the subcutaneous tissue, leading to full-thickness skin loss and visible fat. Stage IV ulcers go even deeper, exposing muscle, bone, or tendon, and often involve extensive tissue damage.

Understanding the distinctions between these stages is essential for proper assessment and management of pressure ulcers, making identification of Stage I crucial to prevent progression to more severe stages.