When to suspect CVT in a patient with headache
| Presence of CVT risk factors (eg, oral contraceptive, pregnancy or puerperium, malignancy, anaemia) |
| New headache or head pain with different features in patients with previous primary headache |
| Symptoms or signs of raised intracranial pressure (eg, papilloedema) |
| New focal neurological signs |
| Altered consciousness |
| Seizures |
CVT, cerebral venous thrombosis.