Cutaneous Clues to Systemic Diseases: A Diagnostic Perspective

The skin serves not only as a protective barrier but also as a visible marker of various internal diseases, often providing early diagnostic clues before systemic symptoms manifest. Many internal diseases have distinct dermatological manifestations, and in some cases, skin changes serve as early indicators of underlying conditions. Recognizing dermatologic signs can facilitate timely diagnosis and management in internal medicine. Therefore, careful observation and interpretation of skin findings are essential for early diagnosis and effective management of systemic diseases. This article highlights key cutaneous manifestations of systemic diseases and their clinical significance.