Because skin cancer is often the result of exposure to the sun, it has become one of the most common types of cancer in the world. The ultraviolet radiation or UV rays given off by the sun can mutate skin cells and turn them cancerous. Skin cancer is quite treatable if caught early -- the most common treatment for skin cancer is to remove the affected patch of skin. The primary symptoms of skin cancer are lesions and discoloration on the skin. These can be overlooked, as many people assume they are nothing to worry about because they are common to see, particularly on people who spend a lot of time in the sun. Other common symptoms of skin cancer that are moles and dark speckles on the skin that grow or change shape over time. [symptom-checker]The red patches that develop as a symptom of skin cancer are usually warm to the touch. While not necessarily painful, this symptom can become uncomfortable as irritation can lead to continuous scratching. Red patches are one of the symptoms of skin cancer that many people miss because people who spend time in the sun often see their skin turn various colors over time.

Common Symptoms

  • Dark lesions
  • Discolored skin
  • Red patches
  • Mole growth
  • Dark speckles


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