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Abstract
A 52-year-old male patient with polyarthritis nodosa (PAN) was referred to our neurology outpatient clinic. His main symptom was paroxysmal alternating bilateral blindness. Subsequently, he developed retro-orbital pain. Neurological examination including funduscopy was normal and laboratory tests showed no relevant abnormalities. MRI orbits showed remarkable perineural thickening and contrast enhancement of the optic nerve sheaths with sparing of the central optic nerve. These findings are pathognomonic for the clinical-radiological diagnosis of optic perineuritis (OPN). The patient was treated with high-dose immunosuppressants and had a good clinical outcome. Rapid diagnosis of OPN is important because early treatment is associated with a better outcome.
- neurology
- neuro-opthalmology
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Footnotes
Contributors LCvR and SMD provided information on the case. SMD wrote and completed the case report. J-HH provided MRI images. LCvR supervised and edited the case report.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.
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