Sensorimotor Dysfunction in Achalasia

"* During this study, the investigators will ask you to fill out questionnaires about your swallowing, chest pain, and heartburn. The investigators hope the patient will answer all of the questions, but patients can skip any questions they do not want to answer. The questionnaires will take about 15 minutes to complete.~* A urine pregnancy test for females of childbearing years.~* Patients will be asked to fast overnight (nothing to eat or drink for 8 hours) prior to the barostat test.~* At this point healthy controls have completed the study.~* Patients with achalasia will then undergo treatment for achalasia at the discretion of the primary clinician managing their case.~* Patients will be contacted to complete a phone survey 3 \& 6 months and 2 \& 4 years after treatment."