[Perennial rhinitis from food allergy].

Food allergy (AA) is involved in a third of subjects with perennial rhinitis (RPA). The majority of the patients are polysensitized. Isolated food allergy was only seen in 6 of 261 cases, which indicates an association of food allergy with other allergens, essentially pneumo-allergens. Immediate diagnosis of AA in RPA is difficult as it is essentially based on tests of elimination and re-introduction of the food, skin tests and RAST.