Allergic rhinitis is one of the commonest diseases. The main allergens responsible are respiratory allergens. Pollinic or seasonal allergic rhinitis is currently distinguished from perannual or nonseasonal rhinitis, generally related to sensitization to allergens of the home environment. The diagnostic approach of allergic rhinitis is based on a careful clinical examination, in order to eliminate other causes of nasal dysfunction, and on complementary investigations, most importantly allergic skin tests. Several types of drugs, topically or systemically administered are currently available to treat allergic rhinitis. Surgical techniques should be reserved to patients who resist to medical treatment or to correct nasal architectural abnormality.