What is DAVF?

　　DAVF refers to dural arteriovenous fistula, a rare cerebrovascular disorder.

　　DAVF is caused by abnormal connections between arteries and veins within the skull, typically occurring between the dura mater and venous sinuses. These abnormal connections disrupt normal blood flow in the cerebral vascular system, leading to a variety of symptoms.

　　Symptoms of DAVF include headache, eye protrusion, blurred vision, hearing loss, facial pain, muscle weakness, seizures, and impaired consciousness. Patients are advised to ensure adequate eye rest and may improve ocular symptoms through eye exercises, gazing into the distance, or using artificial tears—usually resulting in symptom improvement. If left untreated, DAVF can lead to serious complications such as intracranial hemorrhage, cerebral infarction, and brain edema. Treatment options under medical guidance include surgery, endovascular intervention, and radiation therapy.

　　Patients with DAVF should avoid spicy and irritating foods in their daily diet, ensure sufficient rest, maintain healthy lifestyle habits, and engage in appropriate physical activity.