Causes

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

• Chemotherapy
• Gastroparesis (a condition in which the muscles of the stomach wall don't function properly, interfering with digestion)
• General anesthesia
• Intestinal obstruction
• Migraine
• Morning sickness
• Motion sickness: First aid
• Rotavirus (or infections caused by other viruses)
• Viral gastroenteritis (stomach flu) (stomach flu)
• Vestibular neuritis

Other possible causes of nausea and vomiting include:

• Acute liver failure
• Alcohol use disorder
• Anaphylaxis (a severe allergic reaction)
• Anorexia nervosa
• Appendicitis
• Benign paroxysmal positional vertigo (BPPV)
• Brain tumor
• Bulimia nervosa
• Cholecystitis
• Coronavirus disease 2019 (COVID-19)
• Crohn's disease (a type of inflammatory bowel disease)
• Cyclic vomiting syndrome
• Depression (major depressive disorder)
• Diabetic ketoacidosis
• Dizziness
• Ear infection (middle ear)
• Enlarged spleen (splenomegaly)
• Fever
• Food poisoning
• Gallstones
• Gastroesophageal reflux disease (GERD)
• Generalized anxiety disorder
• Heart attack
• Heart failure
• Hepatitis
• Hiatal hernia
• Hydrocephalus
• Hyperparathyroidism (overactive parathyroid)
• Hyperthyroidism (overactive thyroid)
• Hypoparathyroidism (underactive parathyroid)
• Intestinal ischemia
• Intestinal obstruction
• Intracranial hematoma
• Intussusception (in children)
• Irritable bowel syndrome
• Medications (including aspirin, nonsteroidal anti-inflammatories, oral contraceptives, digitalis, narcotics and antibiotics)
• Meniere's disease
• Meningitis
• Milk allergy
• Pancreatic cancer
• Pancreatitis (pancreas inflammation)
• Peptic ulcer
• Pseudotumor cerebri
• Pyloric stenosis (in infants)
• Radiation therapy
• Severe pain
• Toxic hepatitis