What is hyperemesis gravidarum?

Hyperemesis gravidarum is an uncommon disorder in which extreme, persistent nausea and vomiting occur during your pregnancy. This condition might lead to dehydration.

What causes hyperemesis gravidarum?

The condition might be caused by rapidly rising serum levels of hormones such as HCG (human chorionic gonadotropin) and estrogen. Extreme nausea and vomiting during pregnancy might indicate a multiple pregnancy (you’re carrying more than one baby) or hydatidiform mole (abnormal tissue growth that is not a true pregnancy).

What are the symptoms of hyperemesis gravidarum?

Hyperemesis gravidarum usually occurs during the first trimester of your pregnancy. You might have hyperemesis gravidarum if you’re pregnant and you vomit:

  • More than three to four times per day.
  • So much that you lose more than 10 pounds.
  • So much that you feel dizzy and lightheaded.
  • So much that you become dehydrated.

What are the risk factors for hyperemesis gravidarum?

A risk factor is something that increases your chance of getting a disease or condition. Risk factors do not necessarily mean that you'll develop a condition.

In the case of hyperemesis gravidarum, the following are risk factors:

  • Hyperemesis gravidarum during an earlier pregnancy.
  • Being overweight.
  • Having a multiple pregnancy.
  • Being a first-time mother.
  • The presence of trophoblastic disease, which involves the abnormal growth of cells inside the uterus.

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