Final answer:
Actinic keratosis, basal cell carcinoma, squamous cell carcinoma, and melanoma can occur due to sun exposure. Kaposi sarcoma is not commonly caused by sun exposure but by a virus. Prevention and early detection are critical for successful treatment of skin cancers.
Step-by-step explanation:
In response to the effects of sun exposure, the conditions that can occur are actinic keratosis, basal cell carcinoma, squamous cell carcinoma, and melanoma. Actinic keratosis is a rough, scaly patch on the skin that develops from years of exposure to the sun and can sometimes lead to squamous cell carcinoma. Basal cell carcinoma, squamous cell carcinoma, and melanoma are all types of skin cancer that can develop due to extensive UV radiation from sun exposure. Kaposi sarcoma, however, is not commonly associated with sun exposure; it is caused by the human herpesvirus 8 (HHV8) and is often associated with a weakened immune system. Basal cell carcinoma is the most common form and begins in the basal cells of the epidermis. It usually develops on areas of skin that are most exposed to the sun, such as the head and the arms. Squamous cell carcinoma affects the squamous cells and can metastasize if untreated. Melanoma, the most dangerous form of skin cancer, occurs in the melanocytes and can spread to other organs if not detected early.