Achalasia

Achalasia is an uncommon condition affecting the oesophagus, which can lead to challenges when swallowing food and drink. Under normal circumstances, the muscles in the oesophagus work by contracting to push food down towards the stomach. At the lower end of the oesophagus, a muscle ring relaxes to allow food to enter the stomach. However, in achalasia, the oesophageal muscles do not contract as they should, and the muscle ring may not open correctly or may remain closed altogether. As a result, food and drink can become lodged in the oesophagus and may be regurgitated. It's important to note that not everyone with achalasia experiences symptoms.