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The failure of a ring of muscle fibers, such as a sphincter of the esophagus, to relax.

[New Latin : a- + Greek khalasis, relaxation (from khalān, to loosen).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Medicine) pathol failure of the cardiac sphincter of the oesophagus to relax, resulting in difficulty in swallowing
[New Latin, from a-1 + Greek chalasis relaxation]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌæk əˈleɪ ʒə, -ʒi ə, -zi ə)

inability of a circular muscle, esp. of the esophagus or rectum, to relax, resulting in widening of the structure above the muscular constriction.
[1910–15; a-6 + Greek chálas(is) (chala-, s. of chalân to loosen + -sis -sis) + -ia]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


n. acalasia, falta de capacidad de relajación esp. de una abertura o esfínter.
English-Spanish Medical Dictionary © Farlex 2012


n acalasia
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
Achalasia cardia subtyping by high resolution manometry predicts the therapeautic outcome of pneumatic balloon dilatation.
Fact.MR has announced the addition of the "Achalasia Treatment Market Forecast, Trend Analysis & Competition Tracking - Global Review 2018 to 2028"report to their offering.
Differential diagnosis of EoE and GERD, achalasia, Crohn disease, hypereosinophilic syndrome, pill esophagitis or infectious esophagitis is important [12].
BTX-A has been widely used for treating a variety of neuromuscular disorders, such as strabismus, blephorospasm, hemifacial spasm and torticollis, migraine, hyperhidrosis, esophageal achalasia, bruxism and masseter muscle hypertrophy (MMH).
( Achalasia is a condition wherein the esophagus has difficulty moving food down to the stomach.
In addition, he uses the robotic surgery platform to treat patients with esophageal cancer, gastro esophageal reflux disease, Para esophageal hernia and achalasia.
Stella, 51, has achalasia, which leaves her in constant pain, unable to swallow properly, and can make her sick 20 times a day.
Stella Brown, 51, has eating disorder achalasia that stops her swallowing properly, causing her to be sick up to 20 times a day.
BoTox A has been successfully used to treat skeletal muscle spasm and high-tension diseases in adults and children, such as esophageal achalasia.[3] Langer and Birnbaum first described transabdominal ultrasound localization and anal sphincter injection of BoTox A in children with congenital megacolon causing intestinal obstruction.[4] However, this treatment is technically challenging.
(6-8) Multiple studies have shown that botulinum toxin can alleviate spasms of the gastrointestinal tract, aiding patients with dysphagia and achalasia. (9-11) " There is also growing evidence supporting the use of botulinum toxin in the treatment of chronic pain, including non-migraine types of headaches such as tension headaches; myofascial syndrome; and neuropathic pain.
There are a number of diseases that can affect the functionality of the esophagus, the muscular tube that connects the mouth to the stomach, including esophageal atresia, esophageal cancer, and achalasia. It goes without saying that a poorly functioning esophagus is extremely problematic, and even lethal.