[Food allergy: definition--physiopathology]

Food allergy is defined by a mixture of digestive and or extra-digestive clinical symptoms, "rhinitis, asthma, eczema, etc" secondary to contact with a food and/or a preservative and/or addition to the immune system of the organism, with its origin in an excessive humoral and/or cellular response, called HYPERSENSITIVITY. For this to occur, food allergy needs conjunction of several parameters. Predisposing factors Genetics, with facility to produce IgE. Reduction of the defences of the digestive system. Usual foods.