PP gives swallowing: problems, or dysphagia. It occurs in the neck region and may be related to abnormal pressure in the upper ES which usually relaxes with swallowing. Food can then be trapped in this pouch, and cause regurgitation of food, choking, chronic cough and hoarseness. GERD is caused by hiatal hernia or abnormal LES. See https://pmj.bmj.com/content/77/910/506
Answered 9/10/2018
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