What are the two main categories of skin cancer?

The two main categories of skin cancer are melanoma and non-melanoma. Melanoma is less common but more aggressive and has a higher risk of spreading to other parts of the body. It arises from the melanocytes, the skin cells responsible for producing melanin, which gives skin its color. Non-melanoma skin cancers, which include basal cell carcinoma and squamous cell carcinoma, are more prevalent and usually less aggressive than melanoma. These types typically arise from the outer layers of the skin and are often related to sun exposure.

Understanding these categories is essential for recognizing various types of skin cancers, their risk factors, and their treatment options. This knowledge plays a critical role in early detection and prevention strategies within the field of dermatology and tanning practices, highlighting the importance of skin health in relation to UV exposure and lifestyle choices.