Rhinitis does not usually trigger gastritis. Gastritis is categorized into acute gastritis and chronic gastritis. Acute gastritis may be caused by factors such as stress and medication; chronic gastritis may be caused by factors such as Helicobacter pylori infection and duodenal-gastric reflux. 1. Stress: severe trauma, surgery and other factors may lead to abnormal secretion function of the gastric mucosa and increased secretion of gastric acid, resulting in damage to the gastric mucosa and inducing acute gastritis. 2. Drugs: prolonged use of non-steroidal anti-inflammatory drugs can damage the gastric mucosa, leading to acute gastritis, common drugs such as aspirin. 3. Helicobacter pylori infection: this bacterial infection is the main cause of chronic gastritis, which will destroy the normal physiological function of gastric acid and lead to chronic inflammation of the stomach. 4. Duodenal-gastric reflux: the contents of the reflux will stimulate the gastric mucous membrane tissue for a long time, leading to chronic inflammatory reaction of the gastric mucous membrane. When the symptoms of discomfort occur, you can go to the hospital in time, under the guidance of the physician to carry out the relevant treatment, to avoid the aggravation of the disease.