Photoallergy: Basically photoallergy is kind of an allergic reaction which is caused by the drug reaction with skin protiens and UV lights to create a substance (antigen) in the bloodstream that causes photoallergy or allergic reaction. This allergic reaction involves immune system and remain antigen in the body which causes future skin reactions with exposure to sun light. The most common affected body areas is neck, outer surface of the arm, lower arm and legs.
The photoallergic eruptions are itching, redness with rash, and tiny blisters. The symptoms are found after one or two days of the sun exposure because photoallergic reaction is a form of delayed hypersensitive reaction.
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