Sublingual allergen-specific immunotherapy in allergic rhinitis and related pathologies: Efficacy in a paediatric population

The aim of this study was to demonstrate the efficacy and safety of the sublingual-swallow allergen-specific immunotherapy (SLIT) in a paediatric population suffering from allergic rhinitis and related pathologies. From March 1994 through March 2000, at our ENT Department 4000 children (1800 males and 2200 females), aged 3 to 14 years, were examined for recurrent nasal obstruction and nasal polyps. 2400 (60 %) of them were allergic and underwent the following investigations: Impedance test, Pure tone audiometry, rhinomanometry, Prick test, RAST, nasal provocation test and paranasal sinus TC without contrast media. Of the allergic group we admitted 288 patients(12 %) to a 3 yr SLIT, meeting the following criteria: children aged 5 years or more, mono-sensitised to one allergen and with family cooperation support. After three years of SLIT, we observed complete symptom remission and a marked improvement in instrumental examinations in 80 % of these children. The improvement was poor in 8 % of patients, while in 12 % of the subjects no changes in symptoms and instrumental results were detected. These results are in agreement with previously published studies and confirm that SLIT can be a valid tool for treating allergic upper respiratory tract diseases in children.