For what causes stomach fever and discomfort, stomach fever is due to excessive secretion of gastric acid that stimulates the gastric mucosa, resulting in discomfort symptoms such as heartburn, which can be seen in organic lesions, such as the presence of reflux esophagitis, peptic ulcer, gastritis, and diseases such as functional dyspepsia. It may also be related to improper eating of the patient, such as alcohol abuse and eating spicy and stimulating diet or drinking overly sweet carbonated drinks and coffee, which can also irritate the gastric mucosa and lead to symptoms of stomach fever and heartburn, as well as physical discomfort. Therefore, if this problem occurs, fasting is given to reduce stimulating diets such as sweets, while PPI preparations can be taken symptomatically. If the symptoms are not relieved, the patient is advised to go to the hospital for gastroscopy and the appropriate tests such as H. pylori.