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Brain Aneurysm

Brain Aneurysm - Symptoms

​Most will not experience any signs until the aneurysm becomes fairly large or ruptures.

A large aneurysm may exert pressure on a nerve or surrounding brain tissue and may cause widening of the pupils (pupillary dilatation), visual disturbances, numbness, weakness, or paralysis on one side of the face or eye pain.

Up to 40% of patients may experience sudden, intense and persistent headaches (sentinel headaches) days to weeks before the aneurysm ruptures.

When it ruptures, these signs may follow:

  • Sudden onset of severe headache, often described as the “worst” headache of their lives
  • Nausea and/or vomiting
  • Change in mental state or loss of consciousness
  • Seizure
  • Stiff neck
  • Sensitivity to light
  • Vision and/or speech impairment
  • Numbness and/or weakness of body

Call 995 or visit the Emergency Department if you experience any of these symptoms. A rupture may be fatal or cause permanent brain damage.

The information provided is not intended as medical advice. Terms of use. Information provided by SingHealth

Our Care Team

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Chia Ghim Song Dr

Dr Chia Ghim Song

Senior Consultant

BSc(ECE), MEng(ECE), MD, FRCR, MMed (Diagnostic Radiology)

Clinical Interests: Neurointerventional Radiology, Vascular Anomalies, Neuroradiology

Kee Tze Phei Dr

Dr Kee Tze Phei

Consultant

​MD, MRCS (IRE), FRCR (UK), MMED (Diag Rad)

Clinical Interests: Neuroradiology, Neurointerventional Radiology

David Wen Dr

Dr David Wen

Consultant

​MBBS, FRCR, MMed (Diagnostic Radiology)

Clinical Interests: Neuroradiology, Neurointerventional Radiology, Vascular Anomalies

Cheong Tien Meng Dr

Dr Cheong Tien Meng

Associate Consultant

​MBBS, MRCS, FRCSed(SN)

Clinical Interests: General Neurosurgery

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