Christie Clinic - Medicine for Your Life

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Health Encyclopedia

Health Encyclopedia

An invaluable resource of health information.

CSF leak

A CSF leak is an escape of the fluid that surrounds the brain and spinal cord.

  • Alternative Names

    Intracranial hypotension

  • Causes, incidence, and risk factors

    The dura is the membrane that surrounds the brain and spinal cord and contains the cerebrospinal fluid (CSF). CSF can leak from any hole or tear in the dura.

    Causes of a tear in the dura include:

    Sometimes there is no cause.

  • Symptoms

    Symptoms may include:

    • A headache that is worse when you sit up and improves when you lay down
    • Drainage from the ear (rarely)
    • Runny nose
  • Signs and tests

    Diagnosis is usually based on your history of injury, surgery, or lumbar puncture.

    Tests may include:

    • Injection of a radioisotope in the spinal fluid to track the leakage
    • MRI
    • X-ray with contrast dye
  • Treatment

    Depending on the cause of the leak, many cases go away on their own after a few days. Complete bed rest for several days is usually recommended.

    Headache may be treated with pain relievers and fluids. If the headache lasts longer than a week after a lumbar puncture, a procedure may be done to block the hole that may be leaking fluid. This is called a blood patch, because a blood clot can be used to clog the leak. In most cases, this makes symptoms go away. Rarely, surgery is needed to repair a tear in the dura and stop the headache.

    If symptoms of infection occur (fever, chills, change in mental status), antibiotic therapy is needed.

  • Expectations (prognosis)

    The outlook is usually good depending on the cause. Most cases heal by themselves with no lasting symptoms.

  • Complications

    Complications may occur if the cause is surgery or trauma. Infections can cause serious complications, such as swelling of the brain.

  • Calling your health care provider

    Call your health care provider if:

    • You have a headache that gets worse when you sit up, especially if you have recently had a head injury, surgery, or childbirth involving epidural anesthesia.
    • You have a moderate head injury, and then develop a headache along with a thin, clear fluid draining from your nose or ear.
  • Prevention

    Measures such as wearing a helmet when riding a bicycle or motorcycle can help prevent head injuries that can lead to CSF leak.

  • References
    Heegaard WG, Biros MH. Head. In: Marx J, ed. Rosen's Emergency Medicine: Concepts and Clinical Practice. 6th ed. Philadelphia, Pa: Mosby Elsevier; 2006:chap 38.

Review Date: 9/22/2008

Reviewed By: Daniel B. Hoch, PhD, MD, Assistant Professor of Neurology, Harvard Medical School, Department of Neurology, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2014 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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Christie Clinic at the Family Medical Center in Paris
727 East Court Street Paris, IL 61944 Dermatology: 366-1248; Vein and Vascular: 366-2670
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800 North Logan Avenue Danville, IL 61832 (217) 431-8930
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