Esophageal Motility Disorders Are Conditions That Affect The Way The Muscles Of The Esophagus Contract, Move, And Function. This Can Lead To Difficulty Swallowing, Chest Pain, And Other Symptoms. Common Esophageal Motility Disorders Include Achalasia, Diffuse Esophageal Spasm, And Nutcracker Esophagus. Achalasia Is A Condition In Which The Muscles Of The Lower Esophageal Sphincter, Which Normally Relax To Allow Food To Enter The Stomach, Fail To Relax. This Can Cause Difficulty Swallowing, Chest Pain, And Regurgitation. Treatment Often Involves Medications, Lifestyle Changes, And In Some Cases, Surgery. Diffuse Esophageal Spasm Is A Condition In Which The Muscles Of The Esophagus Contract In An Uncoordinated Manner, Resulting In Difficulty Swallowing And Chest Pain. Treatment Often Involves Medications And Lifestyle Changes. Nutcracker Esophagus Is A Condition In Which The Muscles Of The Esophagus Contract With Too Much Force, Resulting In Chest Pain And Difficulty Swallowing. Treatment May Include Medications, Lifestyle Changes, And In Some Cases, Surgery.