Skin cancer refers to the abnormal growth of skin cells, often triggered by excessive exposure to ultraviolet (UV) radiation from the sun or tanning beds. There are various types of skin cancer, including basal cell carcinoma, squamous cell carcinoma, and melanoma. Warning signs of skin cancer include changes in the size, shape, color, or texture of moles or new growths on the skin. They may appear as pink, red, brown, or black spots or patches, sometimes with irregular borders. Skin cancer may also manifest as sores that don’t heal, scaly or crusty areas, or bleeding or oozing lesions. If any suspicious skin changes are noticed, it is essential to seek medical evaluation by a skin cancer dermatologist for proper diagnosis and timely treatment.