Preeclampsia Symptoms: Warning Signs You Should Know
Preeclampsia is a serious pregnancy-related condition involving high blood pressure and signs that organs may be affected. It usually develops after 20 weeks, but it can also begin after birth. Routine prenatal checks matter because early changes such as raised blood pressure or protein in urine may not make you feel unwell.
Written by HelloMommy editorial teamUpdated Published 3 min readWhat preeclampsia is and when it can happen
Preeclampsia is a blood-pressure disorder that can affect several organs. It most often appears after 20 weeks of pregnancy, frequently in the third trimester, and can also develop in the weeks after childbirth. Anyone can develop it, so attending prenatal and postpartum care is important even if you feel well.
Warning symptoms to recognise
Possible symptoms include a severe or persistent headache, blurred vision or flashing lights, pain in the upper abdomen or shoulder, nausea or vomiting in the second half of pregnancy, sudden swelling of the face or hands, rapid weight gain and difficulty breathing. Symptoms vary, and some people have no noticeable warning symptoms before an abnormal check.
Why blood pressure and urine checks matter
High blood pressure usually cannot be felt. Clinicians check blood pressure at prenatal visits and may test urine for protein. If results or symptoms raise concern, further assessment can include repeat blood-pressure measurements, blood tests for liver, kidney and platelet changes, and ultrasound or other monitoring of the baby's growth and wellbeing.
Who may need closer monitoring
Risk can be higher with preeclampsia in a previous pregnancy, chronic hypertension, kidney disease, diabetes, certain autoimmune conditions or a multiple pregnancy. Other factors can also affect risk. Your clinician can review your history and discuss monitoring or preventive treatment; do not start aspirin unless a qualified clinician recommends the dose and timing for you.
Preeclampsia can happen after birth
Do not dismiss new warning symptoms simply because the baby has been born. Postpartum preeclampsia may begin in the days or weeks after delivery and requires urgent medical assessment. Tell the healthcare team that you recently gave birth, especially if you have severe headache, vision changes, upper abdominal pain, sudden swelling, shortness of breath or feel very unwell.
Frequently asked questions
Can you have preeclampsia without symptoms?
Yes. High blood pressure and protein in urine may be found at routine appointments before you notice symptoms. This is one reason regular prenatal checks are important.
When does preeclampsia usually start?
It usually develops after 20 weeks of pregnancy, often later in pregnancy, but it can also begin after childbirth. Symptoms during the postpartum weeks still need urgent assessment.
Is swelling always a sign of preeclampsia?
Gradual swelling can be common in pregnancy, but sudden swelling—especially of the face or hands—can be a warning sign when combined with other symptoms. Seek prompt advice rather than judging swelling alone.
Sources
- NHS — Pre-eclampsia
- American College of Obstetricians and Gynecologists — Preeclampsia and High Blood Pressure During Pregnancy
This article is for general information only and is not medical advice. Always talk to your doctor or midwife about your own pregnancy.
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