“…Rhinosinusitis, nasal polyposis, smell disorders, adenoid hypertrophy, lymphoid hyperplasia in the nasopharynx, obstructive sleep apnea, Eustachian tube dysfunction, otitis media with effusion, atopic dermatitis, asthma, allergic conjunctivitis, chronic cough, laryngitis, and accompanying gastroesophageal reflux are the main comorbid conditions of AR ( 283 , 430 ). Apart from their benefit in comorbid conditions affecting the upper respiratory tract such as nasal polyposis, smell disorders, adenoid hypertrophy, lymphoid hyperplasia in the nasopharynx, Eustachian tube dysfunction, and otitis media with effusion, their benefits are also investigated in disorders of lower airways, including asthma.…”