Boots WebMD Partners in Health
Return To Boots

Cavernous sinus thrombosis

Cavernous sinus thrombosis is a very rare, life-threatening condition that can affect adults and children.

In cavernous sinus thrombosis, a blood clot blocks a vein that runs through a hollow space underneath the brain and behind the eye sockets. These veins carry blood from the face and head back to the heart.

The cause of cavernous sinus thrombosis is usually an infection, but other factors may play a role.

Cavernous sinus thrombosis is a serious condition. In around a third of cases it can cause death.

Cavernous sinus thrombosis symptoms

Symptoms of cavernous sinus thrombosis may include:

Cavernous sinus thrombosis causes

Cavernous sinus thrombosis is typically caused by an infection that has spread beyond the face, sinuses, or teeth. Less commonly, infections of the ears or eyes may cause cavernous sinus thrombosis.

To contain the infection, the body's immune system creates a clot to prevent bacteria or other pathogens from spreading. The clot increases pressure inside the brain. This pressure can damage the brain and may ultimately cause death.

Rarely, cavernous sinus thrombosis may also be caused by a severe blow to the head.

Cavernous sinus thrombosis is more common in people who take certain medications or who have underlying health conditions that may increase their risk of blood clots.

Cavernous sinus thrombosis tests

Doctors may arrange brain scans, including CT and MRI scans, to look for cavernous sinus thrombosis. They may also test blood or spinal fluid to check for signs of infection.

Treatment of cavernous sinus thrombosis

Doctors treat cavernous sinus thrombosis with high-dose antibiotics. These are usually given though an IV drip.

Corticosteroid medications may also be used to reduce swelling. Blood thinners are sometimes given.

If a patient doesn't respond immediately to medication, surgery is usually necessary to drain fluid from the abscess.

WebMD Medical Reference

Medically Reviewed by Dr Rob Hicks on December 30, 2015

Stay informed

Sign up for BootsWebMD's free newsletters.
Sign Up Now!

Popular slideshows & tools on BootsWebMD

rash on skin
Soothe skin and prevent flare-ups
woman blowing nose
Myths & facts about allergies
cold sore
How to cope with cold sores
bowl of soup
Small changes that lead to weight loss
man administering eyedrops
Taking on eye allergies
palm tree and beach
How to make it less stressful
woman exercising
Exercises for low back pain
bain illustration
Best foods for your brain
bucket with cleaning supplies in it
Cleaning for a healthy home
mother and child
Could your baby be allergic to milk?
pregnant woman eating healthy salad
Nutrition needs before pregnancy