Final answer:
Melanoma is a serious form of skin cancer that starts in melanocytes within the epidermis. It's highly fatal due to its ability to rapidly spread, and UV radiation exposure is a major risk factor.
Step-by-step explanation:
Melanoma is a type of skin cancer that originates from the melanocytes, which are pigment-producing cells located in the epidermis, specifically the stratum basale layer. These cells produce melanin, the pigment that gives skin its color. Melanoma is often characterized by the growth of asymmetrical brown and black patches on the skin with uneven borders and raised surfaces.
It is the most fatal type of skin cancer due to its tendency to metastasize. Factors that increase the risk of developing melanoma include excessive exposure to ultraviolet (UV) radiation, particularly through intermittent episodes of intense sunburn, especially at a young age. The final answer in two-line explanation in 300 words: To prevent melanoma, minimizing UV radiation exposure using sunscreen and protective clothing is advised, and regular skin checks are important for early detection and better treatment outcomes.