“Skin cancer occurs when skin cells grow abnormally and uncontrollably, leading to the formation of tumors. It primarily affects the epidermis, the outermost layer of skin. The most common types of skin cancer are basal cell carcinoma, squamous cell carcinoma, and melanoma. While basal and squamous cell carcinomas are often treatable and less aggressive, melanoma is more serious that can spread to other parts of the body if not detected early and Merkel skin cancer rare that is caused from a low immune system and sun exposure.”
Canadian Cancer Society (What is skin cancer? | Canadian Cancer Society)