Maria Omer/LinkedIn
Nov 8, 2026, 06:31
Maria Omer: Clinical Recognition and Management of Cavernous Sinus Thrombosis
Maria Omer, Ophthalmology Resident at Sudan Medical Specilization Board (SMSB), shared a post on LinkedIn:
“Cavernous sinus thrombosis is a rare and extremely serious medical condition, characterized by the formation of a blood clot in the cavernous sinus.
It is a venous cavity located at the base of the brain, just behind the eyes, and it drains blood from the face and brain.
Causes and contributing factors
- Infection (most common cause – septic): Bacteria typically spread from an infection in the midface, sinuses (especially the sphenoid and ethmoid sinuses), teeth, or orbital cellulitis. Staphylococcus aureus is the leading cause, accounting for up to 70 percent of cases.
- Non-infectious (Aseptic) causes: such as head injuries and trauma, surgical operations in that area, hypercoagulable blood conditions, pregnancy, or tumors.
Symptoms and warning signs
Symptoms usually appear rapidly and acutely, and include:
- Severe and persistent headache in the forehead area or behind the eyes.
- A sharp rise in temperature (fever).
- Abnormal swelling, protrusion, or bulging of one or both eyes (often spreading to the other eye within 24-48 hours due to venous contact).
- Drooping eyelids and difficulty or paralysis in eye movement (third, fourth and sixth cranial nerve palsy) with double vision.
- Loss or damage to vision, and numbness or pain in the face (trigeminal nerve involvement).
- Changes in level of consciousness or convulsions in advanced cases.
Diagnosis
- Medical imaging: Magnetic resonance angiography (MRV) or computed tomography angiography with contrast (CT Venogram) is the most important examination to confirm the presence of a clot in the cavernous sinus.
- Blood tests and culture: Blood culture to determine the type of bacteria causing the infection.
- Lumbar puncture (spinal fluid analysis): to rule out spread of infection to the membranes surrounding the brain (meningitis).
Treatment
This condition is considered a medical emergency requiring immediate intervention in intensive care:
- Antibiotics: Administer high doses of broad-spectrum intravenous antibiotics urgently to cover potential microbes.
- Blood thinners (anticoagulants): Heparin or anticoagulant drugs are sometimes used by medical decision to reduce the spread of the clot.
- Corticosteroids: To reduce swelling and inflammatory pressure on cranial nerves (depending on the case).
- Surgery: Draining the abscess or the primary focus of sinusitis if necessary.”
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