The Earliest Forms of Skin The earliest life forms on Earth had basic protective membranes, serving as the primitive ancestors of modern skin. Single-celled organisms developed phospholipid membranes that controlled nutrient exchange and waste removal​. As multicellular organisms emerged, their outer layers became more specialised, forming protective barriers against environmental threats. Among the earliest multicellular […]

Non-melanoma skin cancers (NMSCs) are the most common types of skin cancer worldwide, with Basal Cell Carcinoma (BCC) and Squamous Cell Carcinoma (SCC) being the two predominant forms. While they are generally less aggressive than melanoma, they can still cause significant morbidity and, in some cases, mortality if left untreated​. This article provides a detailed