Obstructive Disease
Foreign objects (especially common)
Intussusception
Neoplasia (gastric or intestinal)
Pyloric stenosis
Gastric antral mucosal hyperplasia
Inflammatory infiltrates (gastric or intestinal)
Chronic partial gastric volvulus
Idiopathic hypomotility of stomach/intestines
(physiologic obstruction) (rare)
Congenital structural abnormalities (rare)
Inflammatory Disease
Inflammatory bowel disease (common)
Pancreatitis (common)
Chronic gastritis
Gastrointestinal (GI) ulceration/erosion
Peritonitis (sterile or septic)
Pharyngitis (caused by upper respiratory virus in cats)
Parasites (e.g., Physaloptera)
Systemic (extraalimentary tract diseases stimulating the
chemoreceptor trigger zone and/or vagal afferents) (common)
Hepatic disease/insufficiency
Hypoadrenocorticism
Diabetic ketoacidosis
Uremia
Hypercalcemia
Cholecystitis
Pyometra
Miscellaneous Causes
Feline hyperthyroidism (common)
Feline heartworm disease (questionable)
Central nervous system (CNS) disease (e.g., limbic
epilepsy, tumor, encephalitis, or increased
intracranial pressure) (rare)
Psychotic or behavioral changes (rare)
Early congestive heart failure (questionable)