Cerebrospinal Fluid (CSF)

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Cerebrospinal Fluid: a serum-like fluid that circulates through the ventricles of the brain, the cavity of the spinal cord, and the subarachnoid space. It acts somewhat like a shock absorber for protection. CSF contains proteins and other important chemicals, known as biomarkers, that may indicate the existence of a disease process, such as meningitis.

Cerebrospinal fluid pressure can impact Migraines and headaches. Most commonly, we see CSF pressure discussed in relation to pseudotumor cerebri, aka idiopathic intractranial hypertension (IIH).

You can read more about CSF, and IIH in:

For more terms, see our Migraine and Headache Glossary.

Medical review by John Claude Krusz, PhD, MD.