There are many warning signs of skin cancer. These signs may include skin changes, unusual spots, mole changes, bleeding sores, and several more. They may be difficult to spot, and if in doubt, seeking medical care is important.Skin cancer is the most common form of cancer. More than 9,500 people in the United States are diagnosed with skin cancer every day.The warning signs of skin cancer can vary. Some symptoms are easy to spot, while others are more subtle and difficult to detect.If you notice any unusual moles, spots, or marks on your skin, it’s important to visit a doctor.If your doctor suspects skin cancer, they’ll refer you to a dermatologist for testing and diagnosis.Like other types of cancer, skin cancer is easiest to treat if caught early.In this article, we take a closer look at the signs and symptoms of the most common types of skin cancer and how they’re diagnosed.