What is subarachnoid hemorrhage?

It is a type of stroke and the commonest cause is trauma. Non-traumatic SAH is almost always due to rupture of a berry aneurysm. An aneurysm is ballooning of the artery in the brain. Rupture of the aneurysm results in bleeding into the space between brain and skull.

What are the symptoms?

• Sudden worst headache of life
• Associated neck or back pain
• Nausea and vomiting
• Decreased responsiveness or loss of consciousness
• Dizziness
• Seizures

How is it diagnosed?

• CT scan and CT angiography
• Lumbar puncture and CSF analysis
• MRI and MR angiography
• DSA to know the cause of SAH