Table 2.

Risk factors for cerebral venous thrombosis

ThrombophiliasGenetic – eg Factor V Leiden
Acquired – eg antiphospholipid syndrome
InfectionIntracranial
Regional eg ear, nose, throat, head, neck
Systemic
TraumaHead injury
Cranial surgery
Lumbar puncture
Endovascular intervention
ReproductivePregnancy
Puerperium
MalignancyIntracranial
Extracranial
MedicationsOral contraceptives
Steroids
Anti-neoplastic drugs (particularly L-asparaginase)
InflammatoryVasculitis eg Behçet’s disease
Systemic lupus erythematosus
Inflammatory bowel disease
Sarcoidosis
HaematologicalIron deficiency anaemia
Polycythaemia
EndocrineHyperthyroidism
SystemicDehydration
Sepsis
Intracranial abnormalitiesDural fistulaeVenous anomalies
Arteriovenous malformations