dyspepsia SYMP:0000422 Dyspepsia is a digestive system symptom referred to as indigestion resulting from an impairment to digestion caused by ulcer, gall bladder disease or inflamed colon. Related symptoms include weakness, loss of appetite, and depression. A symptom of peptic ulcer disease, however, dyspepsia is also a condition with it's own set of conidtions. Should this term stay in the symptom ontology ? symptoms indigestion digestive system symptom