Background: The efficacy of corticosteroid has not been thoroughly studied in the treatment of non-allergic rhinitis. This study was designed to compare the efficacy of nasal corticosteroid in patients with allergic rhinitis (AR), and non-allergic rhinitis (NAR).
Methods: The efficacy of triamcinolone acetonide nasal spray (TANS) on total nasal symptom scores (TNSS), and nasal peak inspiratory flow rate (nPIFR) was studied in a six-week parallel-group trial of NAR (n: 25), and AR (n: 16) patients. Health-related quality of life (HRQoL) and Epworth Sleepiness Scale (ESS) were also analysed.
Results: The TNSSs, and symptom scores of conjunctivitis, snoring, and postnasal drainage were significantly improved in both groups, after two and six weeks of treatment. In contrast to AR, patients with NAR had statistically significant improvement in nasal obstruction, and postnasal drainage beginning from two weeks of the treatment. nPIFR slightly increased in both groups. Scores of generic (SF-36), rhinitis specific (MiniRQLQ) and ESS questionnaires generally improved better in AR than NAR. TANS was well-tolerated in AR and NAR groups with minor adverse events including headache, nasal burning, and bitter mouth taste.
Conclusions: Our study disproved the idea of ineffectiveness of corticosteroid treatment in NAR, and showed that triamcinolone acetate may be an alternative drug in the treatment of NAR.
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