Melanoma is a type of skin cancer caused by changes in skin cells called melanocytes. Risk factors for melanoma include fair skin, light hair or eye color, sun exposure, sunburn history, and use of tanning beds. Early detection of melanoma is important, as it involves monitoring moles and skin spots for changes in appearance, size, or other characteristics. Prevention strategies encompass regular skin exams, sun protection with broad spectrum sunscreen of SPF 15 or higher, limiting sun exposure, and avoiding tanning beds. Treatment options are determined by the severity and stage of melanoma, ranging from surgery to chemotherapy or immunotherapy.