<prompt> Intermittent dysphagia is caused byStrictureAchalasia cardiaPharyngeal diveiculumAll  <response>: Answer is C Pharyngeal diveiculum Progressive Achalasia Progressive systemic sclerosis Peptic stricture Carcinoma Intermittent Lower esophageal ringSpatzki ring Diffuse esophageal spasm Zenkers diveiculum 