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PubMed This is a summary of 18 peer-reviewed journal articles Updated
Obstetrics

Subtypes and Variations: From HELLP to Postpartum Onset

At a Glance

Preeclampsia occurs in different forms, including early-onset before 34 weeks, late-onset, and postpartum up to six weeks after delivery. HELLP syndrome is a severe variant affecting the liver and blood. Recognizing the specific type is crucial for proper monitoring and timely delivery.

While preeclampsia is often talked about as a single condition, it can show up at different times and in different ways. Understanding these subtypes can help you and your care team stay ahead of potential complications.

Early-Onset vs. Late-Onset Preeclampsia

The “timing” of your diagnosis matters because it tells doctors more about the underlying cause and the likely course of the condition.

  • Early-Onset Preeclampsia: Diagnosed before 34 weeks of pregnancy [1]. This version is more strongly linked to the placenta’s development early in the first trimester [2]. Because the baby is still quite small, early-onset preeclampsia often requires more intensive monitoring for “fetal growth restriction” (when the baby grows slower than expected) and may lead to an earlier delivery [3][4].
  • Late-Onset Preeclampsia: Diagnosed at or after 34 weeks [5]. This is the most common form. While it is often less severe for the baby, it still requires careful management to ensure the mother’s blood pressure stays in a safe range [6].

HELLP Syndrome: A Serious Variant

HELLP syndrome is a severe and life-threatening variant of preeclampsia [7]. It is an acronym that describes what is happening to your blood and liver:

  • H (Hemolysis): The breakdown of red blood cells [8].
  • EL (Elevated Liver enzymes): Signs of liver inflammation or stress [9].
  • LP (Low Platelets): A drop in the cells that help your blood clot [8].

Doctors will look at your blood tests for signs of liver distress and cell breakdown [8][9]. A key physical sign of HELLP is severe pain in the upper right side of your abdomen or chest, sometimes mistaken for “bad heartburn” [10]. Because HELLP can progress rapidly, it usually requires immediate stabilization and delivery [9][11].

Postpartum Preeclampsia: The “After-Birth” Risk

Many people believe they are “in the clear” once the baby is born, but preeclampsia can actually develop for the first time after delivery—usually within the first few days, but sometimes up to 6 weeks postpartum [12][13].

Even if your pregnancy and delivery were completely normal, you can still develop postpartum preeclampsia [14]. Postpartum preeclampsia is just as serious as the version that occurs during pregnancy. It can cause seizures (eclampsia) or stroke if left untreated [12]. Vigilance is essential during the “fourth trimester.” You should seek emergency care if you experience any of these after going home:

  • A persistent, severe headache [15].
  • New vision changes or seeing spots [16].
  • Shortness of breath [17].
  • A blood pressure reading of 140/90 mmHg or higher [18].

Always trust your gut—if you don’t feel right after birth, contact your doctor immediately [14].

Back to Home

Common questions in this guide

What is the difference between early-onset and late-onset preeclampsia?
Early-onset preeclampsia is diagnosed before 34 weeks of pregnancy and requires intensive monitoring due to risks of slower fetal growth. Late-onset occurs at or after 34 weeks and is the most common form of the condition.
What is HELLP syndrome?
HELLP syndrome is a severe, life-threatening variant of preeclampsia. It stands for Hemolysis (breakdown of red blood cells), Elevated Liver enzymes, and Low Platelets, and it usually requires immediate stabilization and delivery.
What does HELLP syndrome pain feel like?
A key physical warning sign of HELLP syndrome is severe pain in the upper right side of your abdomen or chest. This pain is sometimes mistaken for very bad heartburn and requires emergency medical evaluation.
Can I get preeclampsia after my baby is born?
Yes, postpartum preeclampsia can develop within the first few days and up to six weeks after delivery. This can happen even if your pregnancy and delivery were completely normal, making vigilant monitoring essential after going home.
What are the warning signs of postpartum preeclampsia?
Warning signs include a persistent, severe headache, new vision changes or seeing spots, shortness of breath, or a blood pressure reading of 140/90 or higher. You should seek emergency care immediately if you experience any of these symptoms.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Do I have early-onset or late-onset preeclampsia, and how does that affect the monitoring of my baby?
  2. 2.Are my labs showing signs of HELLP syndrome, specifically low platelets or elevated liver enzymes?
  3. 3.How long should I be on high alert for symptoms after I leave the hospital with my baby?
  4. 4.If I develop a headache at home after delivery, should I come back to the emergency room or call your office first?
  5. 5.How does having HELLP syndrome or early-onset preeclampsia affect my risk for future pregnancies?

Questions For You

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Related questions

HELLP Syndrome vs Preeclampsia: What's the Difference?Can You Get Preeclampsia After Delivery? | Inciteful Med

References

References (18)
  1. 1

    The blurring boundaries between placental and maternal preeclampsia: a critical appraisal of 1800 consecutive preeclamptic cases.

    Robillard PY, Dekker G, Scioscia M, et al.

    The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians 2022; (35(13)):2450-2456 doi:10.1080/14767058.2020.1786516.

    PMID: 32627713
  2. 2

    sFlt-1/PlGF ratio predicts serious outcomes in confirmed early-onset preeclampsia.

    Shinohara S, Hiraoka N, Mochizuki K, et al.

    European journal of obstetrics, gynecology, and reproductive biology 2024; (300()):159-163 doi:10.1016/j.ejogrb.2024.07.023.

    PMID: 39003888
  3. 3

    Maternal and neonatal outcome among women with early-onset preeclampsia and late-onset preeclampsia.

    Rahman L, Anwar R, Mose JC

    Hypertension in pregnancy 2024; (43(1)):2405991 doi:10.1080/10641955.2024.2405991.

    PMID: 39305196
  4. 4

    A study to compare maternal and perinatal outcome in early vs. late onset preeclampsia.

    Wadhwani P, Saha PK, Kalra JK, et al.

    Obstetrics & gynecology science 2020; (63(3)):270-277 doi:10.5468/ogs.2020.63.3.270.

    PMID: 32489971
  5. 5

    Histological Features of Shallow Placental Implantation Unify Early-Onset and Late-Onset Preeclampsia.

    Stanek J

    Pediatric and developmental pathology : the official journal of the Society for Pediatric Pathology and the Paediatric Pathology Society 2019; (22(2)):112-122 doi:10.1177/1093526618803759.

    PMID: 30301442
  6. 6

    Large-Scale Proteomics Reveals New Candidate Biomarkers for Late-Onset Preeclampsia.

    Andresen IJ, Romero R, Westerberg AC, et al.

    Hypertension (Dallas, Tex. : 1979) 2025; doi:10.1161/HYPERTENSIONAHA.125.25189.

    PMID: 41031401
  7. 7

    Prevalence of Hemolysis, Elevated Liver Enzymes, Low Platelet Count Syndrome in Pregnant Women in a Tertiary Care Hospital.

    Sitaula S, Manandhar T, Thapa BD, et al.

    JNMA; journal of the Nepal Medical Association 2020; (58(226)):405-408 doi:10.31729/jnma.4921.

    PMID: 32788757
  8. 8

    HELLP syndrome at <23 weeks' gestation: a systematic literature review.

    Mossayebi MH, Iyer NS, McLaren RA, et al.

    American journal of obstetrics and gynecology 2023; (229(5)):502-515.e10 doi:10.1016/j.ajog.2023.04.046.

    PMID: 37150281
  9. 9

    Abdelazim and AbuFaza ELLP syndrome as a variant of HELLP syndrome: Case reports.

    Abdelazim IA, AbuFaza M

    Journal of family medicine and primary care 2019; (8(1)):280-284 doi:10.4103/jfmpc.jfmpc_381_18.

    PMID: 30911521
  10. 10

    Gestational Hypertension: A Contemporary Review of Epidemiology, Pathophysiology, and Therapeutic Approaches.

    Sunita , Kaushik R, Gaur PK, Verma KK

    Current hypertension reviews 2024; (20(3)):117-126 doi:10.2174/0115734021312990241115045601.

    PMID: 39601171
  11. 11

    HELLP Syndrome.

    Adorno M, Maher-Griffiths C, Grush Abadie HR

    Critical care nursing clinics of North America 2022; (34(3)):277-288 doi:10.1016/j.cnc.2022.04.009.

    PMID: 36049847
  12. 12

    Case report: A case of posterior reversible encephalopathy in postpartum preeclampsia.

    Rho JD, Kim YH, Shin JH, Kim TK

    Medicine 2023; (102(47)):e36023 doi:10.1097/MD.0000000000036023.

    PMID: 38013383
  13. 13

    The patient experience of a postpartum readmission for hypertension: a qualitative study.

    Viswanathan R, Little SE, Wilkins-Haug L, et al.

    BMC pregnancy and childbirth 2024; (24(1)):358 doi:10.1186/s12884-024-06564-2.

    PMID: 38745136
  14. 14

    Moving the needle: Quality improvement strategies to achieve guideline-concordant care of obstetric patients with severe hypertension.

    Zacherl KM, O'Sullivan KE, Karwoski LA, et al.

    Pregnancy hypertension 2024; (37()):101135 doi:10.1016/j.preghy.2024.101135.

    PMID: 38936015
  15. 15

    Hypertensive Disorders of Pregnancy: Overview and Current Recommendations.

    Folk DM

    Journal of midwifery & women's health 2018; (63(3)):289-300 doi:10.1111/jmwh.12725.

    PMID: 29764001
  16. 16

    Obstetric Disorders and Critical Illness.

    Griffin KM, Oxford-Horrey C, Bourjeily G

    Clinics in chest medicine 2022; (43(3)):471-488 doi:10.1016/j.ccm.2022.04.008.

    PMID: 36116815
  17. 17

    Hypertensive Disorders of Pregnancy: Diagnosis, Management and Timing of Birth.

    İnan C, Uygur L, Alpay V, et al.

    Balkan medical journal 2024; (41(5)):333-347 doi:10.4274/balkanmedj.galenos.2024.2024-7-108.

    PMID: 39239931
  18. 18

    Postpartum preeclampsia or eclampsia: defining its place and management among the hypertensive disorders of pregnancy.

    Hauspurg A, Jeyabalan A

    American journal of obstetrics and gynecology 2022; (226(2S)):S1211-S1221 doi:10.1016/j.ajog.2020.10.027.

    PMID: 35177218

This page provides educational information about preeclampsia subtypes and is not a substitute for professional medical advice. Always contact your doctor immediately or seek emergency care if you experience severe headaches, vision changes, right-sided pain, or high blood pressure readings.

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