Cerebral venous sinus thrombosis (CVST) is a rare form of thrombosis (a bloo clot) affecting the dural venous sinuses which drain blood from the brain. Symptoms may include headache, abnormal vision, any of the symptoms of stroke such as weakness of the face and limbs on one side of the body, and seizures. Treatment is with anticoagulants (medication that suppresses blood clotting). The disease may be complicated by raised intracranial pressure, which may warrant surgical intervention such as the placement of a shunt. There are several other terms for the condition, such as cerebral venous and sinus thrombosis, (superior) sagittal sinus thrombosis, dural sinus thrombosis and intracranial venous thrombosis.