[Skin contact reactions caused by plants].

Plants and plant products cause various contact reactions to the skin and mucosae. The skin reaction is usually dermatitis, such as irritant contact dermatitis, allergic dermatitis and a dermatitis caused by an airborne allergen. Other symptom pictures include allergic and non-allergic contact urticaria, protein contact dermatitis and phytophotodermatitis. Actinic reticuloid, usually induced by contact allergy, can also be considered a contact reaction.