Acid Reflux or acidity is the backward flow of the stomach contents into the esophagus (muscular tube through which ingested food passes from the mouth area to the stomach).
It is due to improper functioning of a sphincter, a circular muscle which normally maintains constriction at the lower end of the esophagus. This backflow of stomach acid into the esophagus is called acidity. Acid reflux generally occurs because the lower esophageal sphincter relaxes and allows harsh stomach juices flow into the esophagus. It is also known as gastroesophageal reflux or heartburn. Acid reflux is a muscular weakness disease, not an acid problem. However, since there are no standard treatments to address the problem directly, acid blocking medications are commonly used to treat the problem.
