Central nervous system

Common

Benign positional vertigo

Migraine

Motion sickness

Uncommon

Cerebrovascular event

Closed head injury

Hydrocephalus

Mass lesion

Meniere disease

Meningitis

Pseudotumor cerebri

Seizure disorder

Gastrointestinal

Common

Appendicitis

Cholecystitis

Cholelithiasis

Gastritis

Gastroesophageal reflux disease

Gastroparesis

Irritable bowel syndrome

Peptic ulcer disease

Uncommon

Adhesions

Esophageal motility disorders

Incarcerated hernia

Intestinal obstruction

Mesenteric ischemia

Pancreatitis

Peritonitis

Infections

Common

Bacterial gastroenteritis

Foodborne illness

Pyelonephritis

Viral gastroenteritis

Uncommon

Brain abscess

Encephalitis

Meningitis

Pneumonia

Metabolic

Common

Diabetic ketoacidosis

Pregnancy

Uremia

Uncommon

Adrenal disorders

Parathyroid disorders

Thyroid disorders

Medications and toxins

Antiarrhythmics, antibiotics, anticonvulsants, arsenic, chemotherapeutics, digoxin, estrogens, ethanol overdose, nonsteroidal anti-inflammatory drugs, opiates, organophosphates and pesticides, overdoses and withdrawal, radiation therapy or exposure, ricin

Other

Acute glaucoma, acute myocardial infarction, nephrolithiasis, pain, psychiatric disorder