Achalasia cardia is a serious disorder of the esophagus, or food pipe, and can be managed with natural solutions. The main symptom of achalasia cardia is difficulty swallowing food and liquids. This is caused by the esophageal muscle not working properly, leading to the inability to push food through the esophageal sphincter into the stomach.Achalasia cardia is a serious disorder of the esophagus, or food pipe, and can be managed with natural solutions. The main symptom of achalasia cardia is difficulty swallowing food and liquids. This is caused by the esophageal muscle not working properly, leading to the inability to push food through the esophageal sphincter into the stomach.Achalasia cardia is a serious disorder of the esophagus, or food pipe, and can be managed with natural solutions. The main symptom of achalasia cardia is difficulty swallowing food and liquids. This is caused by the esophageal muscle not working properly, leading to the inability to push food through the esophageal sphincter into the stomach.