{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T15:34:41Z","timestamp":1774452881445,"version":"3.50.1"},"reference-count":29,"publisher":"BMJ","issue":"3","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2025,12,29]]},"published-print":{"date-parts":[[2026,3]]},"abstract":"<jats:p>Headaches in pregnancy are a common occurrence, and most differentials are benign but cerebral venous thrombosis (CVT) is a life-threatening secondary headache that is more common in pregnancy and postpartum. CVT is caused by an occlusion of the dural venous sinus and\/or cerebral veins and presents with various non-specific presentations and has numerous causes and risk factors which make clinical diagnosis difficult. A woman in her late 30s was diagnosed with extensive CVT at 34 weeks gestation after reporting a persistent headache, visual disturbance and intermittent right-sided paraesthesia. This was her second pregnancy and it had been classed as high risk due to body mass index &gt;40\u2009and history of caesarean section. The woman was being managed in the joint obstetric-endocrinology clinic due to gestational diabetes. Diagnosis of CVT was made on magnetic resonance venogram, which revealed a dural sinus thrombosis involving the left transverse, left sigmoid, left jugular bulb and upper part of left internal jugular vein. She was referred to a tertiary centre for joint care of neurology and obstetrics. Treatment with a two times per day dosing regimen of dalteparin was commenced until elective caesarean section at 37 weeks gestation, after which treatment was changed to warfarin therapy for a further 6\u2009months. Her follow-up recovery was good; she remains asymptomatic. This case highlights difficulties in detecting CVT and treatment of CVT in the third trimester of pregnancy.<\/jats:p>","DOI":"10.1136\/bcr-2025-265688","type":"journal-article","created":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T14:30:59Z","timestamp":1774449059000},"page":"e265688","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Cerebral venous thrombosis in pregnancy"],"prefix":"10.1136","volume":"19","author":[{"given":"Nikita Margaret","family":"John","sequence":"first","affiliation":[{"name":"Tameside and Glossop IC NHS FT, Ashton-under-Lyne, England, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William","family":"Musda","sequence":"additional","affiliation":[{"name":"Diabetes and Endocrinology, Tameside and Glossop IC NHS FT, Ashton-under-Lyne, England, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roopa","family":"Krishnamurthy","sequence":"additional","affiliation":[{"name":"Obstetrics and Gynaecology, Tameside and Glossop IC NHS FT, Ashton-under-Lyne, England, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3186-4122","authenticated-orcid":false,"given":"Edward","family":"Jude","sequence":"additional","affiliation":[{"name":"Diabetes and Endocrinology, Tameside and Glossop IC NHS FT, Ashton-under-Lyne, England, UK"},{"name":"University of Manchester - The Victoria University of Manchester Campus, Manchester, England, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2026,3,25]]},"reference":[{"key":"2026032507301938000_19.3.e265688.1","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1111\/tog.12101","article-title":"Headaches in pregnancy","volume":"16","author":"Revell","year":"2014","journal-title":"The Obstetric &Amp; Gynaecologis"},{"key":"2026032507301938000_19.3.e265688.2","doi-asserted-by":"crossref","first-page":"180","DOI":"10.4103\/bc.bc_50_22","article-title":"Cerebral venous sinus thrombosis in pregnancy and puerperium: A comprehensive review","volume":"8","author":"Algahtani","year":"2022","journal-title":"Brain Circ"},{"key":"2026032507301938000_19.3.e265688.3","doi-asserted-by":"crossref","DOI":"10.1186\/s10194-017-0816-0","article-title":"Headache and pregnancy: a systematic review","volume":"18","author":"Negro","year":"2017","journal-title":"J Headache Pain"},{"key":"2026032507301938000_19.3.e265688.4","unstructured":"Felker A , Patel R , Kotnis R , eds. 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