vascular
Subarachnoid haemorrhage
Subarachnoid (SAH) is bleeding into the subarachnoid space—the area between the arachnoid and the pia mater surrounding the brain. Symptoms may include a severe headache of rapid onset, vomiting, decreased level of consciousness, fever, weakness, numbness, and sometimes . Neck stiffness or neck pain are also relatively common. In about a quarter of people a small bleed with resolving symptoms occurs within a month of a larger bleed.
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Symptoms — what it feels like
- ·Severe headache of rapid onset, vomiting, decreased level of consciousness
Causes — why it happens
- ·Head injury,
How it's found
- ·CT scan, lumbar puncture
Treatment
- ·Neurosurgery or radiologically guided interventions
Complications
- ·Delayed , cerebral vasospasm,
Outlook
- ·45% risk of death at 30 days (aneurysmal)
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See all of Brain & Nerves →Plain-language summary adapted from Wikipedia. Not medical advice.