Sunscreens — MCQs

What is the best range of UV light used for treatment of skin diseases?

How does narrowband UVB therapy work in psoriasis?

A patient presents with a skin rash that is exaggerated on sun exposure. What is the repair mechanism involved in this condition?

A sunscreen ointment has a Sun-Protection-Factor (SPF) of 15. How much UV radiation does it filter out?

Which of the following is NOT a complication of PUVA therapy?

A 12-year-old boy, after spending his holiday on a beach, develops pruritic hemorrhagic vesicles on his cheeks, ears, nose, and hands 12 hours after sun exposure. A week later, the lesions crusted and healed with permanent scars. What is the most probable diagnosis?

Skin cancers develop due to sun light exposure induced by which type of ultraviolet rays?

Histologic sections of skin from an area of sunburn would most likely reveal:

What is the range of light that causes maximum skin damage?

Circulating lymphocytes are most sensitive to which type of ultraviolet radiation?