TY - JOUR T1 - Retrospective Study of the Effects of Post-nasal Drip Symptoms on Cough Duration JF - In Vivo JO - In Vivo SP - 1799 LP - 1803 DO - 10.21873/invivo.12440 VL - 35 IS - 3 AU - TAKEO NAKAJIMA AU - TATSUYA NAGANO AU - YOSHIHIRO NISHIMURA Y1 - 2021/05/01 UR - http://iv.iiarjournals.org/content/35/3/1799.abstract N2 - Background/Aim: The aim of this study was to elucidate the significance of allergic rhinitis and post-nasal drip symptoms in patients with cough-variant and cough-predominant asthma. Patients and Methods: We conducted a retrospective analysis of 91 patients who had cough-variant or cough-predominant asthma and first visited the Nakajima Medical Clinic in Japan between June 2012 and July 2015. Results: Post-nasal drip symptoms were reported in 58 (63.7%) patients. The patients with post-nasal drip symptoms (19.5±8.3 days) had a significantly longer time until cough disappearance than those without post-nasal drip symptoms (11.0±4.8 days) (p=0.000034). Multivariate analysis showed that post-nasal drip symptoms are independent prolonged factors of cough duration. Conclusion: Post-nasal drip symptoms may affect cough control in patients with cough-variant and cough-predominant asthma. ER -