What skin condition is primarily caused by excessive sun exposure?

• A. Dermatitis
• B. Sunburn
• C. Psoriasis
• D. Eczema

Answer: (B)

Sunburn is a skin condition that occurs as a direct result of excessive exposure to ultraviolet (UV) radiation from the sun. When the skin is exposed to UV rays for prolonged periods, it can become inflamed and painful, leading to the characteristic redness, swelling, and sensitivity associated with sunburn. This damage affects the skin's cells and can cause not only immediate discomfort but also long-term effects, including an increased risk of skin cancer.

While dermatitis, psoriasis, and eczema are all skin conditions that can cause irritation or other symptoms, they are not primarily caused by sun exposure. Dermatitis can result from contact with allergens or irritants, psoriasis is an autoimmune condition characterized by rapid skin cell turnover, and eczema is often linked to genetic factors, allergens, or environmental triggers. Therefore, sunburn is distinctly related to sun exposure, making it the correct answer in this context.