Nausea and vomiting may occur separately or together. Common causes include:

  1. Chemotherapy
  2. Gastroparesis (a condition in which the stomach empties more slowly than normal)
  3. General anesthesia
  4. Intestinal obstruction
  5. Migraine
  6. Morning sickness
  7. Motion sickness: First aid
  8. Rotavirus
  9. Viral gastroenteritis (stomach flu)
  10. Vestibular neuritis

Other possible causes of nausea and vomiting include:

  1. Acute liver failure
  2. Alcohol use disorder
  3. Anaphylaxis
  4. Anorexia nervosa
  5. Appendicitis
  6. Benign paroxysmal positional vertigo (BPPV)
  7. Brain tumor
  8. Bulimia nervosa
  9. Cannabis (marijuana) use
  10. Cholecystitis
  11. Coronavirus disease 2019 (COVID-19)
  12. Crohn's disease
  13. Cyclic vomiting syndrome
  14. Depression (major depressive disorder)
  15. Diabetic ketoacidosis
  16. Dizziness
  17. Ear infection (middle ear)
  18. Enlarged spleen (splenomegaly)
  19. Fever
  20. Food allergy (for example, cow's milk, soy or eggs)
  21. Food poisoning (foodborne illness)
  22. Gallstones
  23. Generalized anxiety disorder
  24. Gastroesophageal reflux disease (GERD)
  25. Heart attack
  26. Heart failure
  27. Hepatitis (which is inflammation of the liver)
  28. Hiatal hernia
  29. Hydrocephalus
  30. Hyperparathyroidism (overactive parathyroid)
  31. Hyperthyroidism (overactive thyroid)
  32. Hypoparathyroidism (underactive parathyroid)
  33. Intestinal ischemia
  34. Intestinal obstruction
  35. Intracranial hematoma (blood vessel ruptures with bleeding in or around the brain)
  36. Intussusception (a condition in which part of the intestine slides into an adjacent part of the intestine)
  37. Irritable bowel syndrome
  38. Medications (for example, aspirin, nonsteroidal anti-inflammatories, oral contraceptives, digitalis, antibiotics and narcotics, including opioids)
  39. Meniere's disease
  40. Meningitis (inflammation of the membranes and fluid surrounding your brain and spinal cord)
  41. Pancreatic cancer
  42. Pancreatitis (which is inflammation of the pancreas)
  43. Peptic ulcer (which is an open sore on the lining of the stomach and upper small intestine)
  44. Pseudotumor cerebri (idiopathic intracranial hypertension) (increased pressure inside the skull), also known as idiopathic intracranial hypertension
  45. Pyloric stenosis (in infants)
  46. Radiation therapy
  47. Severe pain
  48. Toxic hepatitis

Causes shown here are commonly associated with this symptom. Work with your doctor or other health care professional for an accurate diagnosis.