The first sign of skin cancer is usually a sore that doesn’t heal. Areas of your skin will be raised, smooth, shiny and pearly. They may look like a scar that is white, yellow, reddish-brown or waxy. More obviously, they may be scaly, bleeding or crusty. If you are experiencing symptoms that appear to be even remotely cancerous, you should arrange to meet with your doctor immediately. Your doctor will perform the necessary tests to determine if your sores are cancerous, and will discuss your treatment options.