A higher than normal amount of stomach acid can lead to symptoms like abdominal pain, nausea, and heartburn find out more about the causes and treatment of high stomach acid subscribe. Acid reflux causing stomach pain. Stomach acid can wear away tissue in the esophagus, causing an open sore to form an esophageal ulcer can bleed, cause pain and make swallowing difficult precancerous changes to the esophagus (barrett's esophagus) damage from acid can cause changes in the tissue lining the lower esophagus.
acid reflux causing stomach pain
