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Published on: April 14, 2014
Late-onset neuromyelitis optica spectrum disorder: A case series from Iran
F Ghadiri1, S Eskandarieh1, M A Sahraian1
1Multiple Sclerosis Research Center, Neuroscience Institute, Sina Hospital, Tehran University of Medical Sciences, Hasan Abad Sq, Tehran, Iran.
Introduction:
Neuromyelitis optica spectrum disorder (NMOSD) is a disabling autoimmune disease of the central nervous system that can start at ages of 50 or more, when it is called late-onset NMOSD (LO-NMOSD). Data on this disorder are sparse. In this cross-sectional study, patient characteristics of the disease were studied. LO-NMOSD patients of a tertiary center in Tehran were studied from 2016 to 2020.
Case Reports:
Eight patients were identified, half of whom were men. The diagnostic delay was from no time-lapse to three years (mean: 0.62, SD: 1.06), which was significantly shorter than in early-onset patients. Seven patients (87.5%) tested positive for AQP4-IgG which was significantly higher compared to early-onset patients (p-value=0.01). Four patients (50%) had both transverse myelitis and optic neuritis as presenting symptoms, while three (38%) had just myelitis and only one (12%) had optic neuritis.
Conclusion:
There is discrepancy regarding different aspects of LO-NMOSD. Further studies are needed to clarify the subject in order to enhance diagnosis and treatment.
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