Functional dyspepsia

Functional dyspepsia refers to a group of clinical syndromes characterized by upper abdominal discomfort symptoms such as upper abdominal pain, upper abdominal bloating, early satiety, belching, poor appetite, nausea, and vomiting, in which organic diseases of the gastrointestinal tract, hepatobiliary tract, and pancreas causing these symptoms have been excluded by examination. The symptoms may persist or recur, with symptom episodes exceeding one month per year. Epidemiological surveys show that patients seeking medical attention for dyspepsia symptoms account for about 30% of total internal medicine outpatient visits and 70% of specialized gastroenterology outpatient visits, among which functional dyspepsia accounts for 30%-40% of specialized gastroenterology outpatient visits.