Cerebral Venous Sinus Thrombosis (CVST) is a rare condition where a blood clot forms in the brain's venous sinuses. These sinuses are responsible for draining blood from the brain. When a clot occurs, it can lead to increased pressure in the brain, causing symptoms such as headaches, vision problems, and seizures. CVST can be caused by various factors, including pregnancy, certain medications, and underlying medical conditions like thrombophilia. Diagnosis typically involves imaging tests like MRI or CT scans. Treatment may include anticoagulant medications to dissolve the clot and prevent further complications.