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Cavernous sinus thrombosis

Cavernous sinus thrombosis is a blood clot in an area at the base of the brain.

Causes

The cavernous sinus is a structure inside the head that receives blood from veins of the face and brain. The blood drains it into other blood vessels that carry it back to the heart. This area also contains nerves that control vision and eye movements.

Cavernous sinus thrombosis is most often caused by a bacterial infection that has spread from the sinuses, teeth, ears, eyes, nose, or skin of the face.

You are more likely to develop this condition if you have an increased risk of blood clots.

Symptoms

Symptoms include:

  • Bulging eyeball, usually on one side of face
  • Cannot move the eye in a particular direction
  • Drooping eyelids
  • Headaches
  • Vision loss

Exams and Tests

Tests that may be ordered include:

Treatment

Cavernous sinus thrombosis is treated with high-dose antibiotics given through a vein (IV) if an infection is the cause.

Blood thinners help dissolve the blood clot and prevent it from getting worse or recurring.

Surgery is sometimes needed to drain the infection.

Outlook (Prognosis)

Cavernous sinus thrombosis can lead to death if left untreated.

When to Contact a Medical Professional

Contact your health care provider right away if you have:

  • Bulging eyes
  • Drooping eyelids
  • Eye pain
  • Inability to move your eye in any particular direction
  • Vision loss
Review Date: 3/31/2024

Reviewed By

Todd Gersten, MD, Hematology/Oncology, Florida Cancer Specialists & Research Institute, Wellington, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

References

Chow AW. Infections of the oral cavity, neck, and head. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 9th ed. Philadelphia, PA: Elsevier; 2020:chap 64.

Markiewicz MR, Han MD, Miloro M. Complex odontogenic infections. In: Hupp JR, Ellis E, Tucker MR, eds. Contemporary Oral and Maxillofacial Surgery. 7th ed. Philadelphia, PA: Elsevier; 2019:chap 17.

Nath A, Berger JR. Brain abscess and parameningeal infections. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 382.

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The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language.

© 1997- A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

All content on this site including text, images, graphics, audio, video, data, metadata, and compilations is protected by copyright and other intellectual property laws. You may view the content for personal, noncommercial use. Any other use requires prior written consent from Ebix. You may not copy, reproduce, distribute, transmit, display, publish, reverse-engineer, adapt, modify, store beyond ordinary browser caching, index, mine, scrape, or create derivative works from this content. You may not use automated tools to access or extract content, including to create embeddings, vectors, datasets, or indexes for retrieval systems. Use of any content for training, fine-tuning, calibrating, testing, evaluating, or improving AI systems of any kind is prohibited without express written consent. This includes large language models, machine learning models, neural networks, generative systems, retrieval-augmented systems, and any software that ingests content to produce outputs. Any unauthorized use of the content including AI-related use is a violation of our rights and may result in legal action, damages, and statutory penalties to the fullest extent permitted by law. Ebix reserves the right to enforce its rights through legal, technological, and contractual measures.
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