A blood clot in a venous space at the base of your skull, usually caused by a spread of infection from sinuses or the face
It is a serious condition that required hospitalization and will need continued careful follow-up
Your medications
Take your antibiotic and blood thinner (anticoagulant) exactly as prescribed
Do not stop anticoagulation without consulting your doctor
If on warfarin, keep all INR (blood test) monitoring appointments
Activity
Avoid strenuous activity until cleared by your doctor
Do not drive if you have double vision or reduced vision
Wound care
If you had sinus surgery, follow your ENT surgeon's wound care instructions
Keep dental infection sites clean per your dentist's instructions
Return to emergency department immediately for
New or worsening headache
Worsening eye swelling, redness, or pain
Double vision that is new or worsening
Any change in vision, including blurring or vision loss
Confusion, difficulty speaking, or weakness on one side
Seizures
Fever (temperature > 38°C or 100.4°F)
Signs of bleeding if on anticoagulation — unusual bruising, blood in urine or stool, severe headache
Follow-up appointments
Ophthalmology within 1–2 weeks of discharge
Neurology within 1–2 weeks of discharge
Infectious disease or treating physician for antibiotic management
MRI or MR venography at 3–6 months to check clot resolution
References
Guidelines and key sources
Long B, Field SM, Singh M, Koyfman A. High Risk and Low Prevalence Diseases: Cavernous Sinus Thrombosis. The American Journal of Emergency Medicine. 2024. PMID: 38959601
Comprehensive emergency medicine review of CST diagnosis and management
Housley SB, McPheeters MJ, Raygor KP, et al. Cavernous Sinus Thrombosis. Neurosurgery Clinics of North America. 2024. PMID: 38782523
Neurosurgical perspective on anatomy, pathogenesis, and intervention
Halawa O, Gibbons A, Van Brummen A, Li E. Septic Cavernous Sinus Thrombosis: Clinical Characteristics, Management, and Outcomes. Journal of Neuro-Ophthalmology. 2025. PMID: 38654412
Key findings including RAPD prognostic significance and mortality data
Saposnik G, Bushnell C, Coutinho JM, et al. Diagnosis and Management of Cerebral Venous Thrombosis: A Scientific Statement From the American Heart Association. Stroke. 2024
AHA 2024 CVT guidelines — anticoagulation recommendations including LMWH and DOACs
Caranfa JT, Yoon MK. Septic Cavernous Sinus Thrombosis: A Review. Survey of Ophthalmology. 2021. PMID: 33831391
Ophthalmologic findings, IOP data, and surgical management review
Akarapas C, Wiwatkunupakarn N, Sithirungson S, Chaiyasate S. Anticoagulation for Cavernous Sinus Thrombosis: A Systematic Review and Individual Patient Data Meta-Analysis. European Archives of Oto-Rhino-Laryngology. 2025. PMID: 39312001
Strongest mortality evidence for anticoagulation (OR 0.067)
Ropper AH, Klein JP. Cerebral Venous Thrombosis. The New England Journal of Medicine. 2021
Landmark NEJM review of CVT pathophysiology, diagnosis, and treatment
Ferriero DM, Fullerton HJ, Bernard TJ, et al. Management of Stroke in Neonates and Children: A Scientific Statement From AHA/ASA. Stroke. 2019
Pediatric CVT management framework and anticoagulation dosing
Pannell JS, Corey AS, Shih RY, et al. ACR Appropriateness Criteria Cerebrovascular Diseases. Journal of the American College of Radiology. 2024
Imaging recommendations including CT venography and MR venography
Khatri IA, Wasay M. Septic Cerebral Venous Sinus Thrombosis. Journal of the Neurological Sciences. 2016. PMID: 26944152
Causative organisms, blood culture yield, and antibiotic duration evidence
Branson SV, McClintic E, Yeatts RP. Septic Cavernous Sinus Thrombosis Associated With Orbital Cellulitis. Ophthalmic Plastic and Reconstructive Surgery. 2018. PMID: 30320718
Case series on orbital cellulitis-associated CST and surgical outcomes
Lansberg MG, O'Donnell MJ, Khatri P, et al. Antithrombotic and Thrombolytic Therapy for Ischemic Stroke. Chest. 2012. ACCP 9th Edition Guidelines
ACCP evidence-based guidelines supporting anticoagulation even with hemorrhagic infarction
SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.