According to Ayurveda acidity is known as Amlapitta which is one of the most common symptom (disease) seen and faced by people in the society. In acidity, pitta dosha is much more involved in comparison to vata & kapha dosha.
Acidity comes under Gastro esophageal reflux disease (GERD). This problem or a disease happens when acid in the stomach regularly flows back into the tube connecting your mouth and stomach (oesophagus). People suffering from acidity experiences acidic reflux.
Acidity commonly results to heartburn. Hydrochloric acid is present in the stomach which helps in the efficient digestion of food and protect the growth of unwanted bacteria. So when there is an excessive production of this acid leads to the disturbance in the gastric glands of stomach.