What is hyperemesis gravidarum?

Hyperemesis gravidarum (HG) is severe nausea and vomiting that occurs during pregnancy. While some “morning sickness” is normal, especially during the first three months, hyperemesis gravidarum is more extreme and can lead to weight loss and dehydration, sometimes requiring hospital treatment.

Women holding baby boots and  smiling

Hyperemesis gravidarum vs morning sickness

Morning sickness is common, affecting up to 80% of women. It typically involves occasional nausea and vomiting but doesn’t cause dehydration or significant weight loss. Symptoms usually improve or disappear by the end of the first trimester.

In contrast, hyperemesis gravidarum involves frequent vomiting, which can lead to weight loss and dehydration. HG symptoms often last longer and may require hospital treatment with IV fluids if dehydration happens.

Hyperemesis gravidarum symptoms

Hyperemesis gravidarum typically begins in the first trimester (around six weeks) and can last for weeks, months or until delivery. It can be debilitating, affecting daily activities.

Common symptoms of  include:

  • Severe nausea
  • Vomiting more than three times daily
  • Losing over 5% of pre-pregnancy weight
  • Inability to keep food or liquids down
  • Dehydration
  • Dizziness or lightheadedness
  • Reduced urination
  • Extreme fatigue
  • Fainting
  • Headaches

Less common HG symptoms:

  • Low blood pressure
  • Rapid heart rate
  • Dry skin
  • Confusion
  • Jaundice (liver damage)
  • Wernicke-Korsakoff syndrome

What causes hyperemesis gravidarum?

The exact cause of hyperemesis gravidarum is not known, but it is thought to be linked to hormone levels during pregnancy. Some women may be more sensitive to hormone changes, possibly due to genetics.

Levels of the pregnancy hormone, human chorionic gonadotropin (hCG), rise rapidly in early pregnancy and peak in the first trimester, which is when most women experience nausea and vomiting. The hormone estrogen, which also rises in early pregnancy, has been linked to sickness.

patient talking to doctor

Hyperemesis gravidarum risk factors

Certain factors may increase the likelihood of developing hyperemesis gravidarum (HG), including:

  • Previous experience with HG in a prior pregnancy
  • Carrying multiples (twins, triplets, etc.)
  • First-time pregnancy
  • A family history of severe morning sickness or HG
  • History of motion sickness or migraines
  • Having gestational trophoblastic disease (GTD), which involves abnormal cell growth in the uterus

How is hyperemesis gravidarum diagnosed?

There is no specific diagnosis for hyperemesis gravidarum, but it describes the more severe instances of pregnancy sickness. Your doctor will perform tests to rule out other possible causes of your symptoms, such as gastroenteritis.

Medical history and physical exam

Your healthcare provider will discuss your symptoms and review your medical and family history. They'll check your weight, assess for dehydration or malnutrition and monitor your blood pressure, which may be low, and pulse, which may be high. Depending on your pregnancy stage, they’ll also check your baby’s heart rate. A pelvic exam might be performed to assess tenderness, which could indicate if your pregnancy is normal or if there are other concerns.

Hyperemesis gravidarum treatment

If your symptoms affect your quality of life and ability to eat and drink, you have several treatment options, including medications, dietary and lifestyle changes, and supplements. In severe cases, you may need to stay in the hospital for treatment.

Lifestyle and home remedies

To help manage symptoms at home, try these tips.

  • Dietary changes: Eating small, frequent meals when you can and choosing bland foods, such as crackers, rice and potatoes, may reduce nausea and vomiting.
  • Drink plenty of fluids: You should also drink fluids at times of the day when you feel better. Seltzer and ginger ale might help, while fruits and vegetables can be easier to tolerate if you blend them in smoothies. Try to drink 6 to 8 cups of non-caffeinated fluids every day.
  • Avoid triggers: Avoid food, smells or movements, such as traveling in a car that may worsen your nausea.

Find specialized care for hyperemesis gravidarum

We can help you get care for hyperemesis gravidarum at a location that fits your needs. We offer several locations across North and Central Texas, including specialized maternity and high-risk pregnancy centers.

Baylor Scott & White Clinic - Austin North Burnet

2608 Brockton Dr, Austin, TX, 78758

Not accepting walk-ins

Baylor Scott & White Clinic - Brenham Hwy 290

604 US 290, Brenham, TX, 77833

Not accepting walk-ins

Baylor Scott & White Clinic - Cedar Park

910 E Whitestone Blvd, Cedar Park, TX, 78613

Not accepting walk-ins

Baylor Scott & White Clinic - College Station Rock Prairie

800 Scott and White Dr, College Station, TX, 77845

Not accepting walk-ins

Baylor Scott & White Clinic - Pflugerville Medical Center (Building 1)

2600 E Pflugerville Pkwy Bldg 1, Ste 200, Pflugerville, TX, 78660

Not accepting walk-ins

Baylor Scott & White Clinic - Pflugerville Medical Center Building 2

2600 E Pflugerville Pkwy Building 2, Pflugerville, TX, 78660

Not accepting walk-ins

Baylor Scott & White Clinic - Round Rock 302 University

302 University Blvd, Round Rock, TX, 78665

Not accepting walk-ins

Baylor Scott & White Clinic - Santa Fe

1402 W Ave H, Temple, TX, 76504

Accepting walk-ins

Baylor Scott & White Clinic - Temple

2401 S 31st St, Temple, TX, 76508

Not accepting walk-ins

Baylor Scott & White Clinic - Temple Professional Plaza II

1713 SW H K Dodgen Loop Bldg II, Ste 100, Temple, TX, 76502

Not accepting walk-ins

Baylor Scott & White Medical Center - Austin

5245 W US Hwy 290 Service Rd, Austin, TX, 78735

Accepting walk-ins

Baylor Scott & White Medical Center - Brenham

700 Medical Pkwy, Brenham, TX, 77833

Accepting walk-ins

Baylor Scott & White Medical Center - Buda

5330 Overpass Rd, Buda, TX, 78610

Accepting walk-ins

Baylor Scott & White Medical Center - Centennial

12505 Lebanon Rd, Frisco, TX, 75035

Accepting walk-ins

Baylor Scott & White Medical Center - College Station

700 Scott and White Dr, College Station, TX, 77845

Accepting walk-ins

Baylor Scott & White Medical Center - Frisco

5601 Warren Pkwy, Frisco, TX, 75034

Accepting walk-ins

Baylor Scott & White Medical Center - Grapevine

1650 W College St, Grapevine, TX, 76051

Accepting walk-ins

Baylor Scott & White Medical Center - Hillcrest

100 Hillcrest Medical Blvd, Waco, TX, 76712

Accepting walk-ins

Baylor Scott & White Medical Center - Irving

1901 N MacArthur Blvd, Irving, TX, 75061

Accepting walk-ins

Baylor Scott & White Medical Center - Lake Pointe

6800 Scenic Dr, Rowlett, TX, 75088

Accepting walk-ins

Baylor Scott & White Medical Center - Lakeway

100 Medical Pkwy, Lakeway, TX, 78738

Accepting walk-ins

Baylor Scott & White Medical Center - Marble Falls

810 W State Hwy 71, Marble Falls, TX, 78654

Accepting walk-ins

Baylor Scott & White Medical Center - McKinney

5252 W University Dr Highway 380 at Lake Forest Drive, McKinney, TX, 75071

Accepting walk-ins

Baylor Scott & White Medical Center - Pflugerville (Building 1)

2600 E Pflugerville Pkwy Bldg 1, Ste 100, Pflugerville, TX, 78660

Accepting walk-ins

Baylor Scott & White Medical Center - Plano

4700 Alliance Blvd, Plano, TX, 75093

Accepting walk-ins

Baylor Scott & White Medical Center - Round Rock

300 University Blvd, Round Rock, TX, 78665

Accepting walk-ins

Baylor Scott & White Medical Center - Temple

2401 S 31st St, Temple, TX, 76508

Accepting walk-ins

Baylor Scott & White Medical Center - Waxahachie

2400 N Interstate 35E, Waxahachie, TX, 75165

Accepting walk-ins

Baylor Scott & White OB/GYN Clinic - Waco
Baylor Scott & White OB/GYN Clinic - Waco

120 Hillcrest Medical Blvd Office Building 2, Ste 201-2, Waco, TX, 76712

Not accepting walk-ins

Baylor Scott & White Obstetrics & Gynecology - Frisco

4461 Coit Rd Ste 205, Frisco, TX, 75035

Not accepting walk-ins

Baylor Scott & White Obstetrics & Gynecology - Frisco at PGA Parkway

16050 Everwell Ln Professional Pavilion I, Ste 200, Frisco, TX, 75033

Not accepting walk-ins

Baylor Scott & White Obstetrics & Gynecology - Grapevine

1631 Lancaster Dr Ste 370, Grapevine, TX, 76051

Not accepting walk-ins

Baylor Scott & White Obstetrics & Gynecology - Rockwall

1005 W Ralph Hall Pkwy Ste 115, Rockwall, TX, 75032

Not accepting walk-ins

Baylor Scott & White Obstetrics & Gynecology - Rowlett

9500 Lakeview Pkwy Ste 100, Rowlett, TX, 75088

Not accepting walk-ins

Baylor Scott & White Park Lane OB/GYN Associates

9101 N Central Expy Ste 150, Dallas, TX, 75231

Not accepting walk-ins

Baylor Scott & White Specialty Clinic - Harker Heights

907 Mountain Lion Cir, Harker Heights, TX, 76548

Not accepting walk-ins

Baylor Scott & White Specialty Clinic - Killeen Hemingway

2405 S Clear Creek Rd, Killeen, TX, 76549

Not accepting walk-ins

Baylor Scott & White Specialty Clinic - Lakeway

200 Medical Pkwy, Lakeway, TX, 78738

Not accepting walk-ins

Baylor Scott & White Specialty Clinic - Marble Falls

800 W State Hwy 71, Marble Falls, TX, 78654

Accepting walk-ins

Baylor Scott & White Specialty Clinic - Salado

213 Millcreek Dr Ste 190, Salado, TX, 76571

Not accepting walk-ins

Baylor Scott & White Surgicare - Dallas

4020 Junius St, Dallas, TX, 75246

Not accepting walk-ins

Baylor Scott & White Surgicare - Garland

530 Clara Barton Blvd Ste 100, Garland, TX, 75042

Not accepting walk-ins

Baylor Scott & White Women's Health Group

3600 Gaston Ave Wadley Tower, Ste 1158, Dallas, TX, 75246

Not accepting walk-ins

Baylor Scott & White Women’s Health Specialists - Waxahachie

2460 N Interstate 35E Ste 165, Waxahachie, TX, 75165

Not accepting walk-ins

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