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Related Experiment Videos

Spontaneous intracranial hypotension.

B Mokri1

  • 1Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.

Current Neurology and Neuroscience Reports
|March 20, 2002
PubMed
Summary

Spontaneous intracranial hypotension (SIH) causes disabling headaches due to cerebrospinal fluid (CSF) leaks, often from the spine. Epidural blood patches are the primary treatment, with surgery as an option if patches fail.

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Area of Science:

  • Neurology
  • Neurosurgery
  • Radiology

Background:

  • Spontaneous intracranial hypotension (SIH) presents with orthostatic headaches and other neurological symptoms.
  • It is caused by cerebrospinal fluid (CSF) leaks, typically spinal, leading to low CSF pressure.
  • Associated symptoms include neck pain, nausea, visual disturbances, and hearing changes.

Purpose of the Study:

  • To summarize the clinical presentation, diagnostic findings, and treatment options for spontaneous intracranial hypotension.
  • To highlight the commonality of spinal CSF leaks in SIH.
  • To discuss the efficacy of epidural blood patches and surgical interventions.

Main Methods:

  • Review of clinical manifestations and diagnostic imaging (MRI, radioisotope cisternography) in SIH.
  • Analysis of treatment outcomes, focusing on epidural blood patches and surgical repair.
  • Discussion of potential underlying causes, such as meningeal weakness and connective tissue abnormalities.

Main Results:

  • SIH commonly presents with orthostatic headaches and characteristic MRI findings like pachymeningeal enhancement and brain sagging.
  • Spinal CSF leaks are the predominant cause, unlike rarer skull base leaks.
  • Radioisotope cisternography aids in leak localization by showing absent cerebral activity and early renal/bladder uptake.

Conclusions:

  • Epidural blood patching is the preferred treatment after conservative measures fail.
  • Surgery offers good outcomes for identified leaks unresponsive to patching.
  • Understanding the etiology, including connective tissue disorders, is crucial for management.

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