AI Article Synopsis
- - The main neurological issue in spontaneous intracranial hypotension (SIH) is paresis of the abducens nerve, but the exact cause is not fully understood.
- - Current understanding suggests that the downward movement of brain contents pulls on cranial nerves, leading to this nerve weakness.
- - Recent MRI findings show that the cavernous sinuses are thicker due to venous swelling from cerebrospinal fluid leakage, which pushes on the abducens nerve, resulting in paresis.
Article Abstract
The most common neurological symptom of spontaneous intracranial hypotension (SIH) is abducens nerve paresis, and the precise pathophysiology is unclear. The accepted explanation is traction on the cranial nerves caused by the downward displacement of the cranial content. We herein report magnetic resonance imaging of SIH that can explain the mechanism underlying abducens nerve paresis. The cavernous sinuses were particularly thickened compared with the surrounding dura. This phenomenon can be explained by venous swelling, which can occur after leakage of cerebrospinal fluid in a closed cavity. This swelling pushes the abducens nerve up, which then causes abducens nerve paresis.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9646353 | PMC |
| http://dx.doi.org/10.2169/internalmedicine.8488-21 | DOI Listing |
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