What is the most common type of skin cancer caused by overexposure to the sun?

Basal cell carcinoma is indeed the most common type of skin cancer associated with overexposure to the sun. This type of cancer originates from the basal cells in the epidermis, which is the outer layer of the skin. Prolonged exposure to UV radiation from the sun can damage the DNA in these skin cells, leading to mutations that cause uncontrolled cell growth. This results in the formation of basal cell carcinoma, which often presents as a pearly or waxy bump and tends to grow slowly.

It's also important to note that while malignant melanoma is another serious form of skin cancer, it is less common than basal cell carcinoma and is more likely to be aggressive. Psoriasis, on the other hand, is a chronic skin condition characterized by red, scaly patches and is not a form of skin cancer. Hypertrichosis involves excessive hair growth and does not relate to skin cancer. Understanding the distinction between these conditions is essential for recognizing the risks associated with UV exposure and maintaining skin health.