Phototoxic and photoallergic reactions after cosmetics

Photoallergic and phototoxic eczemas belong to exogenous photodermatoses. UV radiation and external factors which sensitized skin to sunlight are needed to form such eczemas, and the feature of all photodermatoses is the provocation or increasing of symptoms on exposure to sunlight. This results in skin lesions which are located on exposed parts of the body, especially on the face, neck, forearms. Some medicines or injections like analgesics, cardiovasculars, antimalaris , antidiabetics, neurologics and antibiotics, either taken orally or intravenously, may cause photosensitizing effects. In addition, external use medicines or cosmetics (perfumes) may lead to photoallergic and phototoxic reactions. The treatment of exogenous photodermatoses is based on the identification of the causing factors, using the patch phototest.