Gastro-oesophageal reflux disease and dyspepsia in adults: investigation and management
National Institute for Health and Care Excellence
Dyspepsia describes a range of symptoms arising from the upper gastrointestinal tract, but it has no universally accepted definition.
These symptoms, which typically are present for 4 weeks or more, include upper abdominal pain or discomfort, heartburn, gastric reflux, nausea, or vomiting.
This updated Guidelines summary covers adults (18 years and older) with symptoms of dyspepsia, symptoms suggestive of GORD, or both.