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Intrathecal

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Intrathecal

The intrathecal space is the area between the thin layers of tissue that surround the brain and spinal cord. This space is filled with a liquid called cerebrospinal fluid.

Medicines can be delivered into the intrathecal space with a needle or through a thin flexible tube called a catheter.

Current as of: May 1, 2026

Author: WebMD Ignite Staff

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This information does not replace the advice of a doctor. WebMD Ignite, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

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