Understand Achalasia, a rare swallowing disorder. Learn how it affects the esophagus and the lower esophageal sphincter, making it difficult for food to reach the stomach.
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Overview And Definition
Achalasia, formally known as esophageal achalasia, is a rare but serious motility disorder of the esophagus. The esophagus is the muscular tube that carries food and liquid from your throat to your stomach. In a healthy digestive system, a ring of muscle called the lower esophageal sphincter (LES) relaxes to let food pass into the stomach and then tightens to prevent stomach acid from washing back up. For individuals with this condition, the nerve cells in the esophagus degenerate. As a result, the esophagus loses its ability to squeeze food down (peristalsis), and the LES fails to relax completely, creating a functional blockage.
When specialists refer to esophageal achalasia, they are focusing on the specific anatomical dysfunction of the muscular tube connecting the throat to the stomach. The esophagus is composed of layers of muscle that must work in perfect synchronization with the brain’s signals. In this disorder, the nerve cells within the wall of the esophagus, known as the myenteric plexus, begin to degenerate. As these nerves disappear, the muscle loses its ability to contract effectively. This lack of motility is the hallmark of the disease. Understanding this neurological origin is vital for patients to grasp why simple dietary changes are often not enough to resolve the problem.
Symptoms and Risk Factors
Because the condition develops gradually, achalasia symptoms can be subtle at first and are often mistaken for common gastroesophageal reflux disease (GERD). The hallmark symptom is dysphagia—a feeling that food or liquid is stuck in the chest. As the condition worsens, symptoms typically include:
The exact cause of the nerve degeneration in the esophagus remains a mystery. Researchers suspect it may be linked to an abnormal immune system response (autoimmune disease), possibly triggered by a viral infection. Genetics may also play a minor role. It can occur at any age, though it is most commonly diagnosed in middle-aged adults.
Diagnosis and Evaluation
Diagnosing the condition requires specific testing, as the symptoms closely mimic other esophageal disorders or even strictures caused by tumors. A gastroenterologist will start with a thorough review of your medical history and an evaluation of your swallowing difficulties.
To confirm the diagnosis, doctors rely on three primary tests:
Treatment and Management
While there is no cure to restore the lost nerve function, highly effective achalasia treatment options are available to open the lower sphincter, allowing gravity to empty food into the stomach. The choice of treatment depends on your age, health status, and the severity of the condition.
Recovery and Prevention
Recovery depends on the type of intervention. Following a dilation or surgical myotomy, patients typically start on a liquid diet for a few days before gradually reintroducing soft, and then solid, foods. The most common side effect of opening the sphincter is that stomach acid can now easily wash back up into the esophagus. Because of this, patients who undergo a Heller Myotomy or POEM are often prescribed daily acid-reducing medications (like proton pump inhibitors) to prevent severe acid reflux.
Because the underlying cause is unknown, there is no way to completely prevent the onset of the disease. However, complications can be prevented by seeking early intervention. Long-term management requires regular follow-up appointments with your gastroenterologist. Even after successful treatment, the esophagus does not regain its normal squeezing action, so eating slowly, chewing food thoroughly, and drinking plenty of water during meals will remain lifelong habits to help gravity move food into the stomach.
Send us all your questions or requests, and our expert team will assist you.
Achalasia is a progressive neuromuscular disorder where the lower esophageal sphincter (LES) fails to relax, and the esophageal body is paralyzed (aperistalsis). A Motility Gastroenterologist is the primary specialist. They utilize High-Resolution Manometry (HRM) to precisely diagnose and classify the disease subtype.
The stasis of food and fluid can lead to several severe complications, including: Megaesophagus (severe widening and tortuosity of the esophagus), Esophagitis (non-acid-related irritation from retained food), Aspiration Pneumonia, significant Weight Loss and malnutrition, and a long-term risk of Esophageal Squamous Cell Carcinoma.
Defined by the Chicago Classification using HRM, the three main types are distinguished by their motor patterns: Type I (Classic), which is marked by a completely inactive esophageal body; Type II (Pressurized), which shows simultaneous pressure increases across the whole esophagus and has the best treatment outcomes; and Type III (Spastic), which is characterized by powerful, premature contractions and is the most difficult to treat.
You should seek a specialist immediately if you experience persistent dysphagia (difficulty swallowing) for both liquids and solids, recurrent regurgitation of undigested food (especially at night), or unexplained weight loss.
