Epigastric burning refers to an unpleasant subjective sensation of heat in the epigastrium.
From the nature.com
Upper abdominal bloating is an unpleasant sensation of gaseous distension located in the epigastrium.
From the nature.com
Epigastric pain refers to a subjective, intense and unpleasant sensation in the epigastrium, which can lead patients to believe that some tissue damage is occurring.