Once Barrettâs and cancer is ruled out, the two most common and benign conditions that cause difficulty swallowing are reflux-induced strictures, and Schatzkiâs rings. The former is caused by chronic exposure of acid to the lower esophagus, resulting in first inflammation, and then scarring. The latter, the Schatzkiâs ring, is a muscular narrowing at the end of the esophagus, that is probably either congenital or the result of acid or prior damage to the esophagus by certain pills. The ring typically causes only difficulty swallowing with solids, and can be intermittent.
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