UV radiation converts drugs in the skin to either toxic or allergic substances
A patient has eczema like dry crusted skin with pruritus that has spread to areas not exposed to the sun. This occurred after a topical application of a new drug. Is this patient photoallergic or photosensitive?
A patient has erythema, edema, vesicles and pruritis only where sun exposure occurred. Is this patient photoallergic or photosensitive?