Eclampsia is the new onset of seizures or coma in a pregnant woman with preeclampsia. These seizures are not related to an existing brain condition.
The exact cause of eclampsia is not known. Factors that may play a role include:
Eclampsia follows a condition called preeclampsia. This is a complication of pregnancy in which a woman has high blood pressure and other findings.
Most women with preeclampsia do not go on to have seizures. It is hard to predict which women will. Women at high risk of seizures often have severe preeclampsia with findings such as:
Your chances of getting preeclampsia increase when:
Symptoms of eclampsia include:
Most women will have these symptoms of preeclampsia before the seizure:
The health care provider will do a physical exam to look for causes of seizures. Your blood pressure and breathing rate will be checked regularly.
Blood and urine tests may be done to check:
The main treatment to prevent severe preeclampsia from progressing to eclampsia is giving birth to the baby. Letting the pregnancy go on can be dangerous for you and the baby.
You may be given medicine to prevent seizures. These medicines are called anticonvulsants.
Your provider may give medicine to lower high blood pressure. If your blood pressure stays high, delivery may be needed, even if it is before the baby is due.
Women with eclampsia or preeclampsia have a higher risk for:
Call your provider or go to the emergency room if you have any symptoms of eclampsia or preeclampsia. Emergency symptoms include seizures or decreased alertness.
Seek medical care right away if you have any of the following:
Getting medical care during your entire pregnancy is important in preventing complications. This allows problems such as preeclampsia to be detected and treated early.
Getting treatment for preeclampsia may prevent eclampsia.
Reviewed By: John D. Jacobson, MD, Professor of Obstetrics and Gynecology, Loma Linda University School of Medicine, Loma Linda Center for Fertility, Loma Linda, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.