Common symptoms of chronic gastritis include stomach pain, bloating, belching, acid reflux, nausea, vomiting, heartburn, poor appetite, indigestion, and early satiety. These symptoms can be confirmed by a gastroscopy. If the gastroscopy shows gastric mucosal hyperemia, edema, or erosion, it can be diagnosed as chronic gastritis. It is also recommended to conduct a Carbon-14 breath test to determine if there is an infection with Helicobacter pylori, which has been confirmed as a major cause of chronic gastritis and peptic ulcer diseases. If the infection is positive, a 14-day treatment for Helicobacter pylori is required. Additionally, the treatment for chronic gastritis should include acid suppression and stomach protection, promoting gastric motility and repairing the gastric mucosa, and the treatment usually lasts about four to six weeks.