Sign or Symptom
hyperemesis gravidarum
Subclass of:
Morning Sickness
Definitions related to hyperemesis gravidarum:
  • Excessive vomiting in early pregnancy, leading to the loss of 5% or more of body weight.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Intractable VOMITING that develops in early PREGNANCY and persists. This can lead to DEHYDRATION and WEIGHT LOSS.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • Severe, intractable vomiting during early pregnancy accompanied by hypovolemia, weight loss, and electrolyte imbalances.
    NICHD Pediatric Terminology
    U.S. National Cancer Institute, 2021
  • Severe, intractable vomiting during pregnancy (usually the first trimester) accompanied by dehydration, weight loss, and electrolyte imbalances.
    NCI
    U.S. National Cancer Institute, 2021
  • Hyperemesis gravidarum is uncontrollable vomiting during pregnancy that results in dehydration, weight loss, and ketosis. Diagnosis is clinical and by measurement of urine ketones, serum electrolytes, and renal function. Treatment is with temporary suspension of oral intake and with IV fluids, antiemetics if needed, and vitamin and...
    Merck Manuals
    Merck & Co., Inc., 2025
  • Nausea and vomiting in pregnancy is extremely common. Hyperemesis gravidarum (HEG) is the most severe form of nausea and vomiting in pregnancy.
    Medscape
    WebMD, 2025
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