Why is it bad to have blood in your cerebrospinal fluid?

Abnormal CSF. Normal cerebrospinal fluid (CSF) is clear and colorless. Bloody CSF is abnormal. Possible causes include subarachnoid hemorrhage, intracerebral hemorrhage or cerebral infarct. A traumatic spinal tap may also result in bloody CSF.

Related Questions

Please explain why is it bad to have blood in cerebrospinal fluid?

Not always. Blood in the spinal fluid may have been introduced during the procedure ("bloody tap"); in this case, the rest of the fluid not not be xanthochromic. Blood in the CSF otherwise strongly suggests there has been a hemorrhage into the brain and/or cord and/or their surroundings. Read more...