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Clinical features

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Arteriovenous malformations are usually clinically silent until an event such as bleeding or epilepsy occurs.

Presentations include:

  • intracranial bleeding - more often intracerebral or intraventricular than subarachnoid. Usually in younger people - 20-40 years - than haemorrhage associated with aneurysms.
  • seizures - generalised or focal; common especially if it involves the cortical surface
  • progressive neurological deficits - often involving the basal ganglia. Presents with hemiparesis, dementia, visual field defects. Motor / sensory defects in absence of cranial nerve involvement due to brainstem AVM - rare.
  • headache - may sometimes appear similar to migraine
  • transient ischaemic attacks
  • cranial bruits - especially over eyeball

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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