Functional dyspepsia is divided into epigastric pain syndrome and postprandial discomfort syndrome.
1. Epigastric pain syndrome: mainly manifested as epigastric pain, can be accompanied by epigastric burning discomfort, but it does not spread to the back of the sternum, abdominal pain can be induced or relieved by eating, but can also occur in fasting.
2. Postprandial discomfort syndrome: mainly manifested as early satiety, epigastric fullness and discomfort after meals, symptoms worsened after eating greasy food, may be accompanied by nausea, vomiting and excessive belching and other symptoms. These symptoms are mostly intermittent, and are often accompanied by psychosomatic abnormalities.
Epigastric pain syndrome and postprandial discomfort syndrome can co-exist. Specific treatment of functional dyspepsia should be sought from a clinician.