Table 3

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
  • CVT, cerebral venous thrombosis.