title: Disorders of esophageal motility.
mesh_terms: D003680:Deglutition Disorders / Q000175:diagnosis; D004931:Esophageal Achalasia / Q000175:diagnosis; D004935:Esophageal Diseases / Q000175:diagnosis*; D006801:Humans; D008365:Manometry; D012595:Scleroderma, Systemic / Q000175:diagnosis