Differential impact of migraine on severe maternal morbidity and postpartum readmissions: Insights from a national cohort study

Women with migraine have higher obstetric comorbidity scores, which may contribute to the elevated risk of SMM. Migraine itself is independently associated with increased 30-day nonelective readmission rates and hospitalization costs. These associations, along with the large number of unspecified migraine diagnoses, highlight the importance of thorough migraine screening and documentation, which may help guide interventions to improve maternal outcomes and reduce healthcare burden.