AAP, Asthma Action Plan; ATS, American Thoracic Society; Airway inflammation; Allergic rhinitis; Allergology; Allergy; Allergy diagnosis; Asthma; CE mark, Conformité Européenne mark; CO, Carbon monoxide; DPIs, Dry Powder Inhalers; EAI/AAI, Epinephrine/Adrenaline Auto-Injector; EBC, Exhaled Breath Condensate; EBT, Exhaled Breath Temperature; EDS, Exhalation Delivery Systems; EMA, European Medicines Agency; ERS, European Respiratory Society; ERV, Expiratory Reserve Volume; FDA, Food and Drug Administration; FEF, Forced Expiratory Flows; FEV1, Forced Expiratory Volume in 1 second; FOT, Forced Oscillation Technique; FRC, Functional Residual Capacity; FVC, Forced Vital Capacity; FeNO, Fractional Exhaled Nitric Oxide; GLI, Global Lung Function Initiative; IOS, Impulse Oscillometry; IRV, Inspiratory Reserve Volume; Lung function tests; MDPS, Metered-Dose Pump Sprays; Medical devices; NDDD, Nasal Drug Delivery Device; NO, Nitric oxide; PDMI, Pressurized Metered Dose Inhaler; PEF, Peak Expiratory Flow; PNIF, Peak Nasal Inspiratory Flow; PT, Patch Tests; PhPT, Photopatch tests; Ppb, part per billion; RV, Residual Volume; SPT, Skin Prick Test; Skin tests; TLC, Total Lung Capacity; UV, Ultra Violet; VC, Vital Capacity; VT, Tidal Volume; WAO, World Allergy Organization; WHO, World Health Organization; m-health