Phototoxicity and Photoallergy — MCQs

A 26-year-old pregnant woman presents with arthritis and a malar rash that worsens with sun exposure. She has a low-grade fever and is admitted to the hospital. What is the likely diagnosis?

A child with history of fever, photosensitivity, rash sparing nasolabial fold presents to OP. Identify the condition?

Lady presents with joint pain in both knees and low-grade fever, which occurs intermittently. On examination, she has a rash on sun-exposed areas. What is the clinical diagnosis?

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?

Psoralen plus ultraviolet A (PUVA) therapy is useful in which of the following conditions?

Psoralen is used in the treatment of:

What is the wavelength range of UVB rays?

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

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