Dyspepsia is a common disorder that affects up to 30% of the general population. Symptoms of dyspepsia include upper abdominal pain or discomfort and frequently include symptoms of burning, pressure, or fullness often, but not necessarily, related to meals. Other common symptoms include early feeling of fullness (satiety), nausea, belching, and bloating. While dyspeptic symptoms may develop due to diseases such as peptic
ulcer or gastritis, the vast majority of patients with dyspeptic symptoms are ultimately diagnosed as having functional dyspepsia.