Association between preeclampsia and reversible cerebral vasoconstriction syndrome: A case‐control study

Abstract Background and objectives Pregnancy‐related reversible cerebral vasoconstriction syndrome (RCVS) has higher rates of intracerebral complications and mortality compared to non‐pregnant RCVS. Case reports suggest preeclampsia‐eclampsia as an important risk factor; however, data are limited regarding this association. We hypothesized that pregnancy‐related RCVS is strongly associated with preeclampsia‐eclampsia. Methods We performed a single‐center, retrospective, case‐control study to estimate the association between preeclampsia‐eclampsia and RCVS. Cases between January 1, 2010, and June 30, 2024, were identified from hospital billing data and defined as RCVS in pregnancy or postpartum (