{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T11:06:04Z","timestamp":1771067164920,"version":"3.50.1"},"reference-count":20,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2025,12,29]],"date-time":"2025-12-29T00:00:00Z","timestamp":1766966400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2025,12,29]],"date-time":"2025-12-29T00:00:00Z","timestamp":1766966400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100004200","name":"Olle Engkvists Stiftelse","doi-asserted-by":"publisher","award":["225\u20100020"],"award-info":[{"award-number":["225\u20100020"]}],"id":[{"id":"10.13039\/501100004200","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Obstet Gynecol Scand"],"published-print":{"date-parts":[[2026,2]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Bell's palsy appears to be more common in pregnancy, but incidence numbers differ. Risk factors for pregnancy\u2010associated Bell's palsy have been discussed, but larger studies are needed to receive significant results.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Material and Methods<\/jats:title>\n                    <jats:p>This study aimed to investigate the incidence and maternal risk factors of pregnancy\u2010associated Bell's palsy. It is a nationwide register\u2010based cohort study. Women with Bell's palsy in Sweden from 2005 to 2015 were identified in the National Patient Register. Women giving birth at \u226522 gestational weeks during the same period were identified in the Medical Birth Register. Pregnancy\u2010associated Bell's palsy was defined as the first diagnosis of Bell's palsy during pregnancy or within the first 2\u2009months postpartum, identified by linking the data sets. Childbirths in women without a history of Bell's palsy were used as a comparison group. Risk factors were identified using backward conditional multivariable logistic regression and presented with adjusted odds ratios (aOR) with 95% confidence intervals (CIs).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 2051 childbirths in women with pregnancy\u2010associated Bell's palsy were identified. For a comparison 1\u2009188\u2009489 childbirths in women without a history of Bell's palsy were used. The incidence of pregnancy\u2010associated Bell's palsy was 171.6 per 100\u2009000 childbirths. Pregnancy\u2010associated Bell's palsy was associated with high BMI (e.g., BMI 30\u201334.9, aOR 1.30, 95% CI 1.12\u20131.50), being born in Asia (aOR 1.19, 95% CI 1.04\u20131.37), Africa (aOR 1.76, 95% CI 1.47\u20132.11), or South America (aOR 1.85, 95% CI 1.35\u20132.55), multiple pregnancy (aOR 1.83, 95% CI 1.48\u20132.26), and a diagnosis of herpes zoster (aOR 6.55, 95% CI 2.93\u201314.67), borreliosis (aOR 3.70, 95% CI 1.38\u20139.89), gestational diabetes (aOR 1.68, 95% CI 1.31\u20132.15), or preeclampsia (aOR 2.02, 95% CI 1.74\u20132.35).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The incidence of pregnancy\u2010associated Bell's palsy was 171.6 per 100\u2009000 childbirths. Risk factors related to metabolic stress were associated with pregnancy\u2010associated Bell's palsy, although the causal pathway remains unclear.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1111\/aogs.70135","type":"journal-article","created":{"date-parts":[[2025,12,30]],"date-time":"2025-12-30T06:51:50Z","timestamp":1767077510000},"page":"320-326","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Risk factors for pregnancy\u2010associated Bell's palsy: A nationwide population\u2010based register study"],"prefix":"10.1111","volume":"105","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8537-2070","authenticated-orcid":false,"given":"Lovisa","family":"Lansing","sequence":"first","affiliation":[{"name":"Department of Otorhinolaryngology Karolinska University Hospital  Stockholm Sweden"},{"name":"Department of Clinical Science, Intervention and Technology Karolinska Institutet  Stockholm Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elin","family":"Marsk","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology Karolinska University Hospital  Stockholm Sweden"},{"name":"Department of Clinical Science, Intervention and Technology Karolinska Institutet  Stockholm Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sophia Brismar","family":"Wendel","sequence":"additional","affiliation":[{"name":"Department of Clinical Sciences, Danderyd Hospital Karolinska Institutet  Stockholm Sweden"},{"name":"Department of Women's Health Danderyd Hospital  Stockholm 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