Stomach diseases are often chronic conditions and include gastroparesis, gastritis, and peptic ulcers. Ulcer margins are perpendicular and present chronic gastritis. Ursodeoxycholic acid is an adequate treatment of bile reflux gastritis. It is not associated with H. pylori infection or chronic gastritis. He described the characteristics of erosive or ulcerative gastritis and erosive gastritis. They may include vomiting, nausea, diarrhea, abdominal cramps, and haemorrhagic gastritis. "Helicobacter pylori" colonizes the stomach and induces chronic gastritis, a long-lasting inflammation of the stomach. In Persian medicine, it is used for diabetes, gastritis and stomach ulcer. Acute infection may appear as an acute gastritis with abdominal pain (stomach ache) or nausea. Some people with atrophic gastritis may be asymptomatic. The diagnosis of atrophic gastritis type A should be confirmed by gastroscopy and stepwise biopsy. UDCA has been suggested to be an adequate treatment of bile reflux gastritis. In 1870, Samuel Fenwick noted that pernicious anemia causes glandular atrophy in gastritis. The pathogenic mechanisms are similar to those of erosive gastritis. Also, note that alcohol consumption does not cause chronic gastritis.