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Spontaneous intracranial hypotension--a case report
Leonard R Frank1, Alex Paxson, Joel Brake
1Division of Emergency Medicine, University of Washington School of Medicine, Seattle, Washington 98195, USA.
The Journal of Emergency Medicine
|April 20, 2005
Summary
Spontaneous intracranial hypotension (SIH) causes severe headaches due to cerebrospinal fluid (CSF) leaks. An epidural blood patch effectively treated a patient with SIH, confirming its utility in managing this condition.
Area of Science:
- Neurology
- Neurosurgery
Background:
- Positional headaches, often orthostatic, can indicate intracranial hypotension.
- These headaches are typically complications following medical procedures like lumbar puncture.
Observation:
- A 43-year-old man presented with new-onset orthostatic headaches without prior headache history or recent procedures.
- Initial evaluation included a normal neurological exam and CT scan.
- Lumbar puncture revealed low opening pressure, elevated protein, and red blood cells, suggesting cerebrospinal fluid (CSF) loss.
Findings:
- Radionuclide cisternography identified a CSF leak in the upper thoracic spine.
- Treatment with an epidural blood patch led to dramatic symptom improvement.
Implications:
- Spontaneous intracranial hypotension (SIH) is caused by CSF leaks, often in the spine, with unclear etiology.
- Conservative management and epidural blood patching are key treatments.
- While generally benign, SIH can rarely lead to subdural collections or hematomas.