Eclampsia Causes Seizures in Pregnancy and Is an Emergency

A seizure during pregnancy, or in the days right after giving birth, is frightening for everyone in the room. That is eclampsia: seizures that develop in pregnancy, usually in someone who already has preeclampsia.

It is a medical emergency. But with fast recognition, close monitoring and timely treatment, outcomes can improve for both you and your baby.

Overview: what eclampsia means

Eclampsia is a condition in which seizures develop during pregnancy or after childbirth, usually in a person who has preeclampsia. Preeclampsia is a pregnancy complication marked by high blood pressure and signs that organs such as the kidneys, liver, brain, or placenta may be under stress. Because seizures can affect both parent and baby, eclampsia is treated as an emergency.

Most people hear of eclampsia as a severe form of preeclampsia, and that is true, but it does not always follow a predictable path. Some women have clear warning signs first. Others feel only mildly off, or nothing worrying at all, until a seizure happens. That is exactly why we ask you to keep your prenatal appointments and to tell us about new symptoms straight away.

Eclampsia most often happens in the second half of pregnancy, during labor, or within the first days after delivery, although it can also occur later in the postpartum period. Care usually involves urgent monitoring in a hospital, medicines to prevent further seizures, blood pressure control, and decisions about delivery based on the pregnancy stage and the health of both parent and baby.

Symptoms and warning signs

The defining symptom of eclampsia is a seizure. A seizure may involve loss of consciousness, stiffening of the body, jerking movements, confusion afterward, or temporary difficulty responding. If a seizure happens during pregnancy or soon after birth, emergency medical evaluation is needed right away.

Before a seizure, many patients have symptoms related to preeclampsia. These may include a severe or persistent headache, blurred vision, flashing lights, temporary vision loss, pain in the upper abdomen or under the ribs on the right side, nausea or vomiting, sudden swelling of the face or hands, and shortness of breath. Some people also notice that they simply feel very unwell.

High blood pressure is common here, and you usually cannot feel it. That is the whole point of the blood pressure cuff at every prenatal visit. In some cases, reduced urine output, unusual reflex changes, or signs of fluid in the lungs may appear. A baby may also be affected if the placenta is not working well, which can lead to less movement or concerns about growth.

• Severe headache that does not improve
• Vision changes such as blurring or flashing lights
• Pain in the upper right abdomen
• Sudden swelling, especially of the face and hands
• Shortness of breath or chest discomfort
• Seizure during pregnancy or after delivery

Why eclampsia happens and who is at higher risk

The exact cause of eclampsia is not fully understood, but it is strongly linked to abnormalities in how the placenta and blood vessels function during pregnancy. These changes can lead to high blood pressure, inflammation, and injury to blood vessels and organs. The brain may become especially vulnerable, increasing the risk of seizures.

Eclampsia usually develops from preeclampsia, though seizures can occasionally be the first obvious sign. Risk is higher in people with a first pregnancy, a history of preeclampsia or eclampsia, chronic high blood pressure, kidney disease, diabetes, autoimmune disorders, or multiple pregnancy such as twins. Very young pregnant patients and older maternal age may also increase risk.

Other factors can include obesity, certain placental problems, and a family history of hypertensive disorders of pregnancy. Still, eclampsia can also happen in people without clear risk factors. For that reason, clinicians do not rely on risk alone; they combine history, blood pressure readings, symptoms, urine testing, and blood tests to identify warning signs as early as possible.

How doctors diagnose and assess eclampsia

Eclampsia is diagnosed clinically when a seizure occurs in pregnancy or postpartum and another likely cause is not more probable. Doctors also evaluate for signs of preeclampsia, including elevated blood pressure and evidence that organs are under strain. Because several conditions can cause seizures, the medical team also considers other possibilities such as epilepsy, bleeding in the brain, infection, or severe metabolic disturbances.

Assessment begins with urgent stabilization: breathing, circulation, blood pressure, and the baby’s condition are checked. Blood tests may look at kidney function, liver function, platelet count, and other signs of serious disease. Urine tests may help show protein loss. Fetal monitoring may be used to assess the baby’s heart rate and wellbeing if the pregnancy is ongoing.

Imaging is not always needed, but in selected cases doctors may recommend brain imaging if symptoms are unusual, there is prolonged confusion, or another neurological cause is suspected. Pregnancy monitoring can also include ultrasound to evaluate fetal growth, amniotic fluid, and placental function. Depending on the situation, doctors may involve specialists in maternal-fetal medicine, critical care, neurology, and neonatology.

Treatment and hospital care

Treatment for eclampsia focuses first on safety. The parent is positioned to help protect the airway, oxygen may be given if needed, and the medical team works to prevent injury during or after a seizure. To stop further seizures, the medicine we most often reach for is magnesium sulfate, given and monitored carefully in hospital.

Blood pressure that is severely elevated also needs treatment to reduce the risk of complications such as stroke. Hospital teams may use medications to bring blood pressure down in a controlled way while closely watching the baby. Fluids are managed carefully because both dehydration and fluid overload can be harmful in this condition.

The only definitive treatment for the disease process is delivery of the baby and placenta, but the timing depends on how far the pregnancy has progressed and how stable the parent and baby are. In many cases, once the parent is stabilized, doctors plan delivery because ongoing pregnancy may increase the danger. Depending on the clinical situation, care may involve advanced obstetric monitoring and pregnancy follow-up planning, as well as neonatal support if early delivery is needed.

If complications are severe, management may also include intensive care, blood products, or treatment for kidney, liver, or bleeding problems. When delivery is necessary, the route of delivery depends on obstetric factors and urgency rather than eclampsia alone. If surgery is required, a team experienced in cesarean section may be involved as part of comprehensive maternity care.

Recovery, future pregnancies, and self-care

Recovery does not end with delivery. Eclampsia can still cause problems in the days after birth, and some people develop postpartum eclampsia after going home. Blood pressure may stay high for a while, medicines may be needed, and follow-up visits are important to make sure symptoms are settling and organs are recovering.

Most women recover well with proper treatment, though the whole experience can leave you shaken, physically and emotionally. Rest, real help at home, and discharge instructions you actually understand all matter. Patients should understand which symptoms need urgent attention, especially headache, vision changes, shortness of breath, chest pain, heavy bleeding, severe swelling, or another seizure.

Having eclampsia increases the chance of hypertensive disorders in later pregnancies, so pre-pregnancy counseling and early prenatal care are helpful. In a future pregnancy, doctors may recommend closer monitoring and, in some cases, preventive strategies based on individual risk. Because a history of preeclampsia or eclampsia may also relate to long-term cardiovascular health, routine blood pressure checks and healthy lifestyle habits remain important after pregnancy.

When to seek medical care

Immediate medical care is needed if a pregnant or recently postpartum person has a seizure, faints, becomes difficult to wake, has severe shortness of breath, chest pain, sudden confusion, or severe bleeding. These symptoms should be treated as urgent even if blood pressure has been normal before. Do not wait to see whether it passes; get checked.

Urgent same-day evaluation is also important for severe headache, new vision changes, pain in the upper right abdomen, sudden swelling of the face or hands, or a strong sense that something is wrong. A decrease in fetal movement during pregnancy should also be reported immediately. Patients should not drive themselves if they feel unwell or if a seizure has occurred.

After hospital treatment, follow-up care helps track blood pressure, recovery, and emotional wellbeing. Multidisciplinary specialists may be involved if complications affect the brain, kidneys, liver, or baby. If you are coming from abroad and need maternity or high-risk pregnancy care arranged in one place, Acıbadem Health Point’s multidisciplinary specialists and JCI-accredited hospitals diagnose and treat these conditions, including high-risk pregnancy care and assessment of pregnancy complications.

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