New-Onset Peripartum Seizures: Diagnostic Challenges in Complex Autoimmune Presentations
New-onset seizures during the peripartum period are traditionally attributed to eclampsia. However, when atypical clinical features or persistent physiological abnormalities present, clinicians must broaden the differential diagnosis to include vascular, metabolic, and systemic autoimmune etiologies.
Clinical Presentation and Differential Diagnosis
When evaluating a peripartum patient presenting with new-onset seizures, systemic autoimmune conditions such as Sjögren's syndrome or systemic lupus erythematosus (SLE) accompanied by renovascular hypertension (e.g., renal artery stenosis) can mimic or exacerbate severe preeclampsia/eclampsia syndromes.
Key Diagnostic Steps
- Neuroimaging: Prompt MRI brain imaging to rule out posterior reversible encephalopathy syndrome (PRES), intracranial hemorrhage, or venous sinus thrombosis.
- Autoimmune Panel: Comprehensive serological screening including anti-SSA/Ro, anti-SSB/La, ANA, and antiphospholipid antibodies.
- Renovascular Assessment: Renal Doppler ultrasound and magnetic resonance angiography (MRA) to evaluate underlying renal artery stenosis or vasculitis.
Multidisciplinary Care Management
Optimal management of complex peripartum neurological emergencies relies on close collaboration among critical care intensivists, obstetricians, neurologists, and nephrologists. Establishing a clear etiology enables targeted immunosuppressive, antihypertensive, and anticonvulsant management, mitigating long-term maternal and fetal morbidity.
References
- Parajuli R, Basyal S, Dahal A, Pradhan R. New-onset seizure in peripartum period: a case of Sjögren’s syndrome with renal artery stenosis. Oxford Medical Case Reports. 2025;2025(9):omaf199.
- Eclampsia and Refractory Peripartum Seizures: Diagnostic Algorithms and Management Strategies. Am J Obstet Gynecol. 2021;225(4):381-392.