High-Risk Pregnancy Signs: The Urgent Warning List

Two different questions hide behind “high-risk pregnancy.” One is whether your pregnancy is classified as high risk — a matter of medical history, decided at a prenatal visit. The other is whether something happening right now is an emergency. The US has a standard answer to the second one: the urgent maternal warning signs.

The urgent maternal warning signs

This is the list published by the Alliance for Innovation on Maternal Health and used by the CDC’s Hear Her campaign. Any one of them means seeking care immediately, during pregnancy or in the year after it:

• Severe headache that will not go away or gets worse over time
• Dizziness or fainting
• Thoughts about harming yourself or your baby
• Changes in your vision
• Fever of 100.4°F (38°C) or higher
• Extreme swelling of your hands or face
• Trouble breathing
• Chest pain or a fast-beating heart
• Severe nausea and throwing up that is not like morning sickness
• Severe belly pain that does not go away
• Your baby’s movements stopping or slowing during pregnancy
• Vaginal bleeding or fluid leaking during pregnancy
• Heavy vaginal bleeding or foul-smelling fluid after pregnancy
• Swelling, redness, or pain in your leg
• Overwhelming tiredness

Fifteen items, and none of them is “wait and see whether it passes.”

The year after birth counts

The list is deliberately written for pregnancy and the twelve months that follow. The practical instruction attached to it is worth repeating: tell whoever is treating you that you are pregnant or were pregnant within the last year. Symptoms that would be read as a routine complaint in another adult get triaged differently once that sentence is on the record.

Preeclampsia is the reason several of these are on the list

Persistent headache, vision changes, sudden swelling of the face and hands, upper-right abdominal pain, trouble breathing — those cluster for a reason. MedlinePlus describes preeclampsia as a sudden rise in blood pressure after the 20th week, usually with signs of damage to organs such as the liver or kidneys, with a reading of 140/90 or higher prompting investigation. The awkward part is that high blood pressure usually has no symptoms at all, which is why the cuff at every prenatal visit is doing more work than it appears to.

What puts a pregnancy in the high-risk category

NICHD defines a high-risk pregnancy as one in which the mother, the fetus, or both are at higher risk for health problems than in a typical pregnancy. The factors it names:

Group	Examples
Existing conditions	High blood pressure, diabetes, kidney disease, thyroid disease, autoimmune disease such as lupus or multiple sclerosis, PCOS, obesity, HIV
Age	Teen pregnancy; a first pregnancy after 35
Lifestyle	Alcohol, tobacco, and drug use
Pregnancy-related	Twins or higher-order multiples, gestational diabetes, preeclampsia and eclampsia, previous preterm birth, fetal genetic or structural conditions, a pregnancy within 12 months of a previous delivery

NICHD is equally clear that the classification is not a prognosis: it means the care plan changes, usually more visits and more testing, not that a complication is coming.

What to do when a warning sign appears

1. Go to the emergency department or labor and delivery, or call 911 for chest pain, trouble breathing, fainting, seizure, or heavy bleeding.
2. Say out loud that you are pregnant, or were pregnant within the past year.
3. Name when the symptom started and how it has changed since.
4. Do not talk yourself out of it. Being evaluated and sent home is the intended outcome of this list working.

Bleeding with cramping in early pregnancy has its own page — miscarriage symptoms — as does one-sided pain with bleeding, which can be an ectopic pregnancy. For the ordinary symptoms that are not warning signs, see pregnancy symptoms; and if the item worrying you is relentless vomiting, nausea during pregnancy remedies covers where home measures end.

This content is informational and does not replace medical consultation, diagnosis, or treatment.