Pressure Injuries and Skin Failure: The Search for Clarity.

Skin failure is increasingly recognised across healthcare settings, yet its definition, diagnostic criteria and relationship to pressure injuries remain inconsistent with little interdisciplinary consensus. This lack of clarity complicates bedside assessment, documentation and quality reporting. Historically, pressure injuries were viewed as preventable events associated with inadequate care, but growing evidence shows that some wounds develop despite optimal preventive measures, particularly in patients with multimorbidity or limited physiological reserve. This article will review the historical development of skin failure and how it is intertwined with contrasting theories of pressure injury formation that began in the 19th century. We will track the proliferation of definitions and overlapping terms that muddle contemporary documentation and classification, and demonstrate why a unified definition is urgently needed. Skin failure represents the intersection of tissue deformation with systemic vulnerability including hypoperfusion, inflammation, vascular dysfunction, oedema, medication effects, immune compromise, nutritional depletion and age-related changes. A meaningful and practical definition must span all healthcare environments and patient populations, supporting accurate diagnosis and equitable evaluation of care quality. We outline a call to action that includes interdisciplinary consensus, standardised terminology and the development of predictive tools that integrate physiologic data, advanced analytics, and patient-centered outcomes across the healthcare continuum.