The skin as an external marker of systemic inflammatory and endocrine dysfunction

Dermatological manifestations of systemic disease represent a critical clinical window into underlying endocrine, metabolic, and inflammatory dysfunction. Adult-onset acne vulgaris, accelerated skin ageing, and treatment-resistant dermatological conditions are frequently cutaneous markers of pathophysiological disturbance requiring systemic interrogation, investigation and management. This paper presents a comprehensive framework for integrating dermatological assessment with systemic medical evaluation, illustrated through a detailed clinical case study of a 26-year-old woman presenting with refractory acne vulgaris who was subsequently diagnosed with polyendocrine metabolic ovarian syndrome (PMOS) formerly polycystic ovary syndrome; PCOS, a new consensus name intended to better reflect the multisystem endocrine and metabolic features of the condition. This paper discusses the application of the Accelerated Skin Ageing Assessment Score (ASAAS), a quantifiable clinical tool for risk stratification, and the pathophysiological mechanisms linking chronic inflammation, endocrine dysregulation, and accelerated biological skin ageing. The implications for clinical practice are discussed, emphasising the paradigm shift from symptomatic dermatological treatment towards systemic assessment and prevention of long-term disease progression.