Nausea and Vomiting in Pregnancy is common occuring in up to 1 in 3-4 women. It usually happens before 9 weeks of the pregnancy, and if it happens after 9 weeks then other conditions must be looked for. The differential diagnosis of nausea and vomiting in pregnancy includes:

Gastrointestinal conditions

  • Gastroenteritis
  • Gastroparesis
  • Achalasia
  • Biliary tract disease
  • Hepatitis
  • Intestinal obstruction
  • Peptic ulcer
  • Pancreatitis
  • Apendictis

Conditions of the urogenital tract

  • Pyelonephritis
  • Uremia
  • Torsion of the ovary
  • Kidney stones
  • Uterine leiomyoma

Metabolic Conditions

  • Diabetes
  • Porphria
  • Addison's disease
  • Hyperthyroidism
  • Hyperparathyroidism

Neurology Disorders

  • Pseudotumor cerebri
  • Vestibular lesions
  • Migraines
  • CNS tumors
  • Lymphocytic hypophysitis

Other Diseases

  • Drug toxicity
  • Drug intolerance
  • Psychologic conditions

Pregnancy related

  • Acute fatty liver of pregnancy
  • Preeclampsia

From: ACOG Practice Bulletin 2015