<unk>  <unk> ,<unk><unk>  and<unk><unk>  or<unk><unk><unk>  (CVT), is the presence of a blood clot in the dural<unk><unk> es (which drain blood from the brain), the<unk>  veins, or both. Symptoms may include severe headache, visual symptoms, any of the symptoms of stroke such as weakness of the face and limbs on one side of the body, and seizures. The diagnosis is usually by computed tomography (CT scan) or magnetic resonance imaging (MRI) to demonstrate obstruction of the<unk><unk> es. After confirmation of the diagnosis, investigations may be performed to determine the underlying cause, especially if one is not readily apparent. Treatment is typically with anticoagulants (medications that suppress blood clotting) such as low molecular weight heparin. Rarely, thrombolysis (enzymatic destruction of the blood clot) is used. The disease may be complicated by raised intracranial pressure, which may warrant surgical intervention such as the placement of a shunt.
Cerebral venous sinus thrombosis
Subarachnoid hemorrhage
Brain abscess
Cavernous sinus thrombosis
Amoebic brain abscess
Subdural empyema
Arachnoiditis
Pseudosubarachnoid hemorrhage