Subarachnoid Hemorrhage

Definition

Subarachnoid hemorrhage is a type of stroke that occurs when a blood vessel ruptures. Blood quickly fills the area immediately surrounding the brain and spinal cord. This space contains the cerebrospinal fluid. The fluid cushions and bathes the brain and spinal cord.This life-threatening condition requires emergency medical care. The hemorrhage may increase the pressure around the brain. It can interfere with the brain's ability to function.
Subarachnoid Hemorrhage
exh53858 97870 1 subarach hemo
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Causes

Subarachnoid hemorrhage may be caused by:
  • Head trauma
  • Rupture of cerebral aneurysms and other blood vessel deformities
  • Bleeding disorders
  • Drug use , especially with cocaine and amphetamines
  • Brain tumors

Risk Factors

Factors that may increase your chance of developing subarachnoid hemorrhage include:
  • Past history of aneurysms
  • Hypertension , which increases the risk of aneurysm rupture
  • Smoking
  • Heavy alcohol consumption
  • Cocaine use
  • Disorders associated with weakened blood vessels, including polycystic kidney disease , fibromuscular dysplasia, or connective tissue disorders
  • Estrogen deficiency
  • Family history of aneurysms

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