Gastritis generally refers to any disease caused by inflammation of the gastric mucosa, there can be diffuse or limited, most gastritis can be to do gastroscopy and examination, or histology can be clearly diagnosed. General gastritis is a reversible lesion, mainly gastric mucosal erosion and bleeding, and then a long time diet irregularities, overeating, like to eat some spicy, cold, hard, these cold food will cause acute gastritis. Then the main thing is the pylori infection, which is also the most important factor. Then there is smoking, alcohol diet, the etiology is diverse, complex there are many kinds of gastric mucosa ischemic defense ability decreased and acid reflux, these and other factors have a lot to do with. Most people have epigastric pain, loss of appetite, nausea, vomiting, these are related. If you have these symptoms, take some gastric medicine, plus dietary attention, eradication of pylori, active symptomatic treatment, slowly will be relieved and cured, so do not worry about this.