Functional dyspepsia is not a hereditary disease and does not have a genetic component. Functional dyspepsia refers to indigestion caused by the dysfunction of the stomach and intestines without any obvious organic diseases. The main symptoms include dull pain in the upper abdomen, which can manifest as burning or bloating pain. There are also symptoms such as acid reflux, belching, heartburn, diarrhea, vomiting, and sometimes the passage of mucus stools. Generally, it does not lead to purulent or bloody stools, nor does it cause fever or severe urgency after defecation, among other symptoms.