Noun
hyperemesis during pregnancy; if severe it can result in damage to the brain and liver and kidney
Source: WordNetThe source also brought up Middleton’s condition, hyperemesis gravidarum, which is an extreme form of morning sickness, and called it “life-threatening.” Source: Internet
When vomiting is prolonged, intractable, and interferes with nutrition and fluid intake, it is termed hyperemesis gravidarum (HG). Source: Internet