Appetite is almost always deficient in both acute and chronic disease; most so, however, in the former, as a rule. Perverted appetite occurs in case of chlorosis, and in some hysterical subjects.

Nausea (sick stomach), with or without vomiting, is met with in indigestion, colic, seasickness, pregnancy (morning sickness), gastritis (inflammation of the stomach), hysteria (occasionally), cholera-morbus, epidemic cholera, bilious remittent fever, yellow fever, ulcer of stomach, cancer of stomach, strangulated hernia (rupture), obstruction of the bowels, irritant poisoning.