113 patients with concomitant asthma and allergic rhinitis followed up from at least 3 months will be enrolled for the validation process at outpatient clinic of Pediatric Allergology & Pulmonology (PAP) of Respiratory Disease Research Center (RDRC) within the Institute of Biomedicine and Molecular Immunology (IBIM) of the National Research Council (CNR) of Palermo (RDRC-IBIM CNR), Italy.