Achalasia symptoms, signs, diagnosis and treatment

What is achalasia? Achalasia is a rare disease of the muscle of the esophagus (swallowing tube). The term achalasia means "failure to relax" and refers to the inability of the lower esophageal sphincter (a ring of muscle between the lower esophagus and the stomach) to open and let food pass into the stomach. As a result, patients with achalasia have difficulty swallowing food. How does the