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Is Your Headache a Sign of Something Serious? Understanding Cerebrospinal Fluid
Published: May 20, 2024
Did you know there's a clear fluid flowing through your brain and spine right now? It's called cerebrospinal fluid (CSF), and it plays a crucial role in protecting your brain and nervous system.
What Exactly is CSF?
CSF is a clear, colorless liquid that surrounds your brain and spinal cord. Think of it like a protective cushion or river that flows through your central nervous system. It's produced continuously in areas of your brain called the choroid plexus, circulates throughout your skull and spine, and then gets absorbed back into your bloodstream.
Why CSF Matters
CSF serves several vital functions. It acts as a shock absorber for your brain, delivers nutrients, removes waste products, and helps maintain the right pressure inside your skull. Abnormalities in CSF can signal various health issues, from infections to bleeding in the brain.
When Doctors Test Your CSF
A spinal tap, or lumbar puncture, is a procedure where doctors take a sample of your CSF. This test can help diagnose conditions like meningitis, multiple sclerosis, or bleeding in the brain. During a spinal tap, doctors measure the CSF pressure and analyze its contents, including cell counts, protein, and glucose levels.
Frequently Asked Questions
Adults typically have 90-200 mL, about as much as a small juice box.
Your body makes about 20 mL of CSF per hour, replacing it completely 3-4 times daily.
Yes, abnormal CSF pressure can cause symptoms like headaches or vision problems.
The Bottom Line
While you may never see it, CSF plays a crucial role in keeping your brain healthy and protected.
References
- Leinonen V, Vanninen R, Rauramaa T. Cerebrospinal fluid circulation and hydrocephalus. Handb Clin Neurol 2017; 145:39.
- Hasbun R. Cerebrospinal fluid in central nervous system infections. In: Infections of the Central Nervous System, 4th edition, Scheld WM, Whitley RJ, Marra CM (Eds), Lippincott Williams, 2014. p.4.
- Whiteley W, Al-Shahi R, Warlow CP, et al. CSF opening pressure: reference interval and the effect of body mass index. Neurology 2006; 67:1690.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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