The term Achalasia can be usually defined as the lack of the lower esophageal sphincter to relax and also the presence of esophagus motility abnormalities. The particular cause of achalasia is unknown. However, it may usually occur by the degeneration of the esophageal muscles and, more importantly, the nerves that control the muscles. As a result, people suffering with achalasia face difficulty in swallowing food. In addition to the failure to relax.
In achalasia at least half of the patients, they have the symptoms of lower sphincter resting pressure (which is usually known as the pressure in the lower sphincter when the patient is not swallowing) also is abnormally high. Achalasia is mainly associated with abnormalities of esophageal peristalsis which is usually the coordinated muscular activity of the body of the esophagus which plays a major role in transportation of food from the throat to the stomach.
Disease statistics: Achalasia is an uncommon swallowing disorder that affects about 1 in every 100,000 people. Disease affects mostly adults between ages 30s and 50s. It occurs equally in males and females. It is typically diagnosed in adults, but can occur in children as well.