reproductive system disorder hyperemesis gravidarum MedDRA:10020614 HP:0012188 MESH:D006939 pernicious vomiting of pregnancy MEDGEN:43776 SCTID:14094001 UMLS:C0020450 MONDO:0006791 hyperemesis gravidarum (disease) EFO:1000971 hyperemesis gravidarum (disease) hyperemesis gravidarum pregnancy pernicious vomiting Severe, intractable vomiting during pregnancy (usually the first trimester) accompanied by dehydration, weight loss, and electrolyte imbalances. pregnancy disorder