Everything You Need to Know About Melanoma Skin Cancer and How to Treat It CAPS Melanoma is the most serious form of skin cancer due to its ability to spread rapidly if not detected and treated early. Knowing the warning signs could save your life. The ABCDEs Skin Cancer Randolph Foot and Ankle Melanoma (Skin Cancer): Symptoms & Causes, Stages, Diagnosis & Treatment Melanoma is a serious form of skin cancer, but early detection can significantly improve outcomes. What causes it? Excessive UV radiation can cause mutations in melanocytes (pigment cells), leading to uncontrolled cell