what causes constant belching
However, as belching is a natural response to abdominal discomfort, there must be other symptoms present to make a diagnosis. Conditions that may cause belching include: gastroesophageal reflux disease (GERD): a disorder that causes acid from the stomach to flow upward into the esophagus, or food pipe.
Belching and bloating may be due to food, eating habits, or disorders in the stomach, small intestine or gallbladder. Bloating and gas may not always be expelled or relieved by a belch and other factors and conditions should be considered in cases of excessive bloating and gas.