A Member of the University of Maryland Medical System | In Partnership with the University of Maryland School of Medicine
Achalasia is a disorder in which the lower esophageal sphincter does not relax when food passes down the esophagus to the stomach. As a result, the esophagus becomes distended and filled with food, and food passes into the stomach very slowly. Achalasia is often associated with chest pain during eating, weight loss, and regurgitation of food. The lower esophagus becomes distended as food and liquid are unable to pass into the stomach.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial policy, editorial process and privacy policy. A.D.A.M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health on the Net Foundation (www.hon.ch).
© 2011 University of Maryland Medical Center (UMMC). All rights reserved.
UMMC is a member of the University of Maryland Medical System,
22 S. Greene Street, Baltimore, MD 21201. TDD: 1-800-735-2258 or 1.866.408.6885