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Eclampsia: Symptoms, Causes, Treatment

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Quick summary

Eclampsia involves pregnancy- or postpartum-related seizures and is a maternal and fetal emergency. Any seizure during pregnancy or after delivery needs immediate emergency help, even without a previous hypertension diagnosis.

Last updated: 4 October 2026
Medical disclaimer: This content is for educational purposes only and is not a substitute for consulting a qualified physician. Do not use this information for self-diagnosis or self-treatment.

What is Eclampsia?

It is usually associated with pre-eclampsia but may occur before warning signs have been recognized. It does not necessarily mean chronic epilepsy, and monitoring remains important after birth.

Related reading: Postpartum hemorrhage: another post-birth emergency.

Symptoms

Severe headache, visual change, upper abdominal pain or feeling very unwell may precede a seizure, or onset may be sudden. Lack of swelling or a previously normal blood-pressure reading does not exclude danger.

Causes

Placental and vascular disturbances and their effects on the brain contribute, but seizures are not fully predictable. Clinicians also assess other causes, including epilepsy, stroke and metabolic abnormalities.

Risk factors

Pre-eclampsia, chronic hypertension, kidney disease, diabetes, multiple pregnancy and a previous affected pregnancy increase risk. Eclampsia can occur without known risk factors; current symptoms require attention.

Diagnosis

Assessment starts with breathing, circulation and blood pressure, followed by platelets, liver and kidney tests, urine assessment and fetal monitoring. Atypical features may require brain imaging. Investigation must not delay emergency treatment.

Treatment

Hospital teams protect breathing, control seizures and prevent recurrence, commonly using monitored magnesium sulfate, and treat severe hypertension. If still pregnant, delivery is planned after maternal stabilization according to circumstances; cesarean delivery is not automatic for every seizure.

Complications

Complications can affect the brain, lungs, kidneys or liver and include placental abruption or premature birth. Recovery follow-up covers blood pressure, kidney health and future pregnancy planning.

Prevention

Antenatal attendance and blood-pressure checks help identify risk, and selected patients receive prescribed preventive treatment. Do not start aspirin or supplements instead of assessment. Follow the postpartum monitoring plan.

When to see a doctor

Call emergency services for any seizure. Clear hazards and protect the head without restraining movements or placing anything in the mouth. Once jerking stops, position her on her side if safe, monitor breathing and follow dispatcher instructions.

Scientific references

  1. Pre-eclampsia and eclampsia — NHS
  2. Eclampsia — MedlinePlus
  3. Hypertension in pregnancy: recommendations — NICE
  4. Seizure first aid — Gateshead Health NHS