Call your provider right away if you have these warning signs
Contact your healthcare provider immediately if you are pregnant and cannot keep down any fluids for more than 12 hours, see blood in your vomit, have abdominal pain, feel lightheaded or dizzy, notice signs of dehydration like dark urine or dry skin, or have lost more than 5 pounds. These signs mean your body needs medical attention, not home remedies.
What is hyperemesis gravidarum?
Hyperemesis gravidarum is extreme, persistent nausea and vomiting during pregnancy that can lead to dehydration, weight loss, and electrolyte imbalances. Regular morning sickness is mild nausea and occasional vomiting, and most people can still eat and drink some of the time. Hyperemesis gravidarum is different because vomiting is frequent and severe enough that keeping down food or fluids becomes very difficult.
Nausea and vomiting affect a large share of pregnancies, with roughly half of pregnant people experiencing some vomiting and about three-quarters experiencing nausea. Hyperemesis gravidarum is far less common, affecting a small percentage of pregnancies, but it is a common reason for hospitalization in early pregnancy.
Morning sickness vs. hyperemesis gravidarum
- Timing: Both usually start before 9 weeks of pregnancy and often improve by 14 to 18 weeks, though some people have symptoms longer.
- Eating and drinking: With morning sickness, you can usually eat and drink during parts of the day. With hyperemesis gravidarum, keeping anything down is difficult for extended periods.
- Weight: Morning sickness typically does not cause weight loss. Hyperemesis gravidarum can cause a loss of more than 5% of body weight.
- Dehydration: Morning sickness rarely leads to dehydration. Hyperemesis gravidarum often does, which is why fluid intake needs to be tracked closely.
- Daily function: Morning sickness may be uncomfortable but usually allows daily activities to continue. Hyperemesis gravidarum can make working or self-care very hard and is sometimes linked to anxiety or depression that can continue after pregnancy.
What causes it
The exact cause of nausea and vomiting in pregnancy is not fully known. It is thought to be related to a rapidly rising level of human chorionic gonadotropin (HCG), a hormone released by the placenta. Hyperemesis gravidarum may be somewhat more likely with a twin or multiple pregnancy, or with a hydatidiform mole, a rare growth of tissue in the uterus. People who had hyperemesis gravidarum in a previous pregnancy, or who are prone to motion sickness, have a 15 to 20% higher chance of it happening again.
Dehydration and nutrition risks
Severe, ongoing vomiting is harmful mainly because of dehydration and poor weight gain. Warning signs of dehydration include dark urine, dry skin, weakness, lightheadedness, or fainting. In rare cases, constant vomiting can cause bleeding in the esophagus or other serious complications. If you cannot take in enough nutrition, your care team may give you fluids and nutrients through an IV, or in some cases through a feeding tube.
Evidence-based treatment options
Treatment is matched to how severe your symptoms are, so what helps one person may not be enough for another.
- Dietary and lifestyle changes: Eating small, frequent meals; choosing dry, bland foods like crackers; and avoiding personal triggers such as strong smells, bright lights, or certain textures can ease mild symptoms.
- Staying hydrated at home: Sipping fluids during times of the day when nausea is lowest, and trying options like ginger ale or other sparkling drinks, may help some people.
- Prenatal vitamins: Taking a vitamin supplement before and during pregnancy has been shown to reduce the risk of severe nausea and vomiting.
- Vitamin B6 and doxylamine: These are commonly used, evidence-supported options for nausea in pregnancy. Any medication or supplement, including over-the-counter options, should be discussed with your provider first.
- Ginger and acupressure: Some studies support ginger and acupressure wristbands for easing mild to moderate nausea, though the evidence is mixed and they may not be enough for severe cases.
- Prescription anti-nausea medication: When home measures are not enough, a provider may prescribe antiemetic medication.
- IV fluids: If dehydration develops, fluids given through an IV can restore hydration and electrolyte balance.
- Hospitalization: If nausea and vomiting become severe enough to put the pregnant person or baby at risk, hospital admission for closer monitoring and treatment may be needed.
Because hyperemesis gravidarum can be hard to treat once it becomes severe, experts recommend early treatment of nausea and vomiting so it does not progress. Talk with your provider as soon as symptoms start affecting your ability to eat, drink, or function.
When hospitalization may be needed
Hospital care is generally considered when a person cannot tolerate any oral fluids, is not responding to anti-nausea medication, or has electrolyte imbalances or other complications that need close monitoring. In the hospital, treatment usually starts with IV fluids and may include anti-nausea medication and nutritional support.
Extra-caution groups
- People carrying twins or multiples, who have a somewhat higher chance of hyperemesis gravidarum.
- People with a hydatidiform mole, which is ruled out with an ultrasound.
- People who had hyperemesis gravidarum in a past pregnancy.
- People with a history of motion sickness.
- Anyone already showing signs of dehydration or unable to keep down fluids for over 12 hours — this always warrants prompt medical contact rather than home management.
Evidence limits
Research on some home remedies, like ginger and acupressure, comes from smaller studies, and results vary between people. What relieves one person’s nausea may do little for another, especially in more severe cases. Guidance in this article reflects general, evidence-based information; it is not a substitute for an individual evaluation, which accounts for your specific symptoms, pregnancy history, and health status.
Frequently asked questions
Is hyperemesis gravidarum the same as severe morning sickness?
They’re closely related but not identical. Hyperemesis gravidarum is considered a more severe, medically defined form of nausea and vomiting in pregnancy, marked by an inability to keep down food or fluids and measurable weight loss, rather than just intense discomfort.
Can hyperemesis gravidarum harm my baby?
With proper identification and follow-up care, serious complications for the baby are rare. That said, ongoing dehydration and poor nutrition are the main reasons this condition needs medical attention rather than being managed alone at home.
Does hyperemesis gravidarum go away?
For many people, severe nausea and vomiting improve by 14 to 16 weeks of pregnancy. Some people continue to have symptoms longer, including through the entire pregnancy, which is why ongoing care with a provider matters.
Will I need to be hospitalized?
Not necessarily. Many cases are managed with dietary changes, hydration strategies, and medication prescribed by a provider. Hospitalization is generally reserved for cases involving dehydration, inability to tolerate fluids, or other complications that need closer monitoring.
Related reading
Educational disclaimer
This article is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment. Nausea and vomiting in pregnancy can range widely in severity, and only a qualified healthcare provider can evaluate your specific symptoms and recommend a treatment plan. If you are pregnant and experiencing severe or worsening nausea and vomiting, contact your provider promptly.