There are various common disorders that affect the body adversely. Heartburn is a digestive disorder that is caused by various factors like stress, smoking, alcohol and various other foods and beverages. It usually causes the burning sensation of the chest that radiates in the upper part of the body like throat and esophagus. It can occur after eating and last for many hours. The valve of the stomach gets weakened and causes the contents of the stomach reflux back into the throat and causes the irritation of throat also. It causes the burning sensation of the throat and chest and bitter taste in the mouth. When food passes from stomach to the esophagus and throat it causes the dysphagis. Dysphagia is a condition when people find trouble with ingestion of the food. This throat pressure can cause the chest pressure and chest pain that last for several hours. The difficult ingestion condition can be a sign of esophageal cancer.