Subtypes of functional dyspepsia

Table 1 Definitions of dyspeptic symptoms

Symptom	Description
Pain centred in the upper abdomen	A subjective unpleasant, patients may feel that tissue damage is occurring. Other symptoms may be extremely bothersome A subjective unpleasant without being interpreted as pain.
Discomfort centred in the upper abdomen	A subjective unpleasant sensation that is not interpreted as pain, which may include any of the symptoms below.
Early satiety	A feeling the stomach is overfilled soon after starting to eat, out of proportion to the size of the meal.
Fullness	An unpleasant sensation of the persistence of food in the stomach (may or may not occur post prandially).
Bloating in the upper abdomen	A tightness in the upper abdomen, this should be distinguished from true abdominal distension.
Nausea	A feeling of the need to vomit.
Retching	Heaving as if to vomit but no gastric contents are forced up.