👉 Exfusion is a type of gastritis, characterized by symptoms such as heartburn, burning in the chest, and nausea. It occurs when stomach acid or digestive enzymes are released from the esophagus into the stomach, which can cause inflammation and irritation of the lining of the stomach. Exfusion may be caused by an underlying medical condition, such as gallstones, diverticulitis, or a weakened immune system. Treatment for exfusion typically includes medication to reduce stomach acid production or antibiotics if