Pain in the middle of the chest indicates a very high likelihood of stomach disorders, commonly acute gastritis or gastric ulcer. When stomach disorders appear, the early symptoms are atypical and may be vague or distended, and there may also be nausea, vomiting, acid reflux, belching, and hiccups. Gastroscopy can be performed to be able to make a clear diagnosis. If the gastroscopy reveals acute inflammatory changes in the gastric mucosa with redness and swelling on the surface as well as red and white crossings, oral medications such as omeprazole or rabeprazole can be administered for treatment. If there are ulcerative lesions, depressed lesions, or even bleeding in the middle of the ulcer in the mucosa of the stomach, oral medications are needed for symptomatic treatment. It is usually treated with triple therapy, such as omeprazole, clarithromycin and amoxicillin. After one month, another gastroscopy review is needed to find out if the ulcerative lesions have healed.