Acid reflux can also cause a post-nasal drip, which may be related to sinusitis or inflammation of the sinuses mucus accumulation in the throat is a common symptom of acid reflux once acidic digestive juices move upward, they can cause swelling in the throat, forming a "shelf" on which mucus accumulates. Can acid reflux cause mucus. Gastroesophageal reflux disease, or gerd, is a condition in which stomach acid backs up in a person's esophagus because the esophagus is not meant to handle corrosive substances, it causes a number of unpleasant symptoms these can include heartburn, reflux of the stomach contents into the throat, nausea, vomiting, and thick phlegm in the throat.
can acid reflux cause mucus
