Headache – Plain CT Brain – Accuracy

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  • There are a number of important causes of headache that may not be identified on plain CT brain.
  • If there is remaining clinical suspicion other modalities such as CTA, CTV, MRA, MRV need to be considered. ┬áSeek specialist advice.


  • Small sub-arachnoid haemorrhage
  • Cerebral vein thrombosis (sinus venous thrombosis, cavernous sinus thrombosis)
  • Meningitis / Encephalitis
  • Posterior reversible encephalopathy syndrome (previously known as hyptertensive encephalopathy)
  • Benign intracranial hypertension

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