[Cough from the perspective of a gastroenterologist].

Sedelmayr, Michael; Lenglinger, Johannes; Juillerat, Pascal (2021). [Cough from the perspective of a gastroenterologist]. Therapeutische Umschau, 78(4), pp. 171-179. Hogrefe 10.1024/0040-5930/a001256

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Cough from the perspective of a gastroenterologist Abstract. Chronic cough can have numerous origins. The work-up of these conditions should always include a multidisciplinary approach to exclude other causes first (cardial, pulmonary, structural changes of pharynx and larynx, allergies, malignancy) before thinking of an upper GI pathology. Cough as an extra-esophageal manifestation of gastroesophageal reflux disease (GERD) is the most common gastroenterological condition. From a gastroenterologist's perspective eosinophilic esophagitis (EoE) and esophageal motility disorders are potential differential diagnosis. If other worrisome symptoms (weight loss, anemia, dysphagia) are present at the same time an endoscopic evaluation with esophago-gastro-duodenoscopy (EGD) should be performed first to exclude a malignancy. Hereby one should perform biopsies of the esophagus to exclude an eosinophilic esophagitis (EoE). If the macroscopic and histopathology results of the EGD are unremarkable a probatory trial of acid-suppressive therapy with proton pump inhibitors (PPIs) is the first-line therapeutic option. For non-responders to PPI-therapy functional diagnostics are the next step. With the help of ambulatory pH-impedance monitoring one can diagnose a non- erosive reflux disease and an esophageal hypersensitivity. An esophageal manometry can deliver relevant information about the physiological anti-reflux barrier and diagnose motility disorders of the esophagus. Surgical therapy (antireflux surgery) can be an option for selected patients with proven reflux associated cough refractory to medical therapy. The aim of this review is to give an overview over a possible diagnostic-therapeutic algorithm from a gastroenterologist's point of view to approach the symptom cough.

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