Laryngopharyngeal Reflux and Chronic Cough.

Laryngopharyngeal reflux (LPR) is one of the most common causes of cough. It may not respond to acid suppression trials because non-acidic and weakly acidic reflux are often the etiology in refractory cases. Hypopharyngeal-esophageal multichannel intraluminal impedance with dual pH testing is the gold standard to diagnose LPR and guide personalized treatment of individual patients. Treatments typically involve a combination of barrier agents such as sodium alginate-based agents, acid suppression (when indicated), and diet and lifestyle management.