Opticospinal multiple sclerosis

Opticospinal multiple sclerosis (OSMS) is a demyelinating disease and has been considered a variant of multiple sclerosis (MS) encountered in Asian populations, who are generally rarely affected by normal multiple sclerosis. It has similar clinical and imaging features to neuromyelitis optica (NMO) and may in fact represent the same disease, in a different population 1-2.

The identification of anti-aquaporin 4 IgG antibodies in NMO has naturally lead to them being sought in patients with OSMS, with varying results, ranging form 35-90% 1. Although this higher than positive rates in patients with conventional MS, whether or not NMO and OSMS are the same disease remains to be fully elucidated.

As the imaging appearances are similar/identical, please refer to the article on neuromyelitis optica (NMO) for further details.


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rID: 26655
Synonyms or Alternate Spellings:
  • Opticospinal Multiple Sclerosis (OSMS)
  • Opticospinal form of Asian MS
  • Opticospinal form of Asian Multiple sclerosis
  • Opticospinal form of Asian Multiple sclerosis (OSMS)
  • OSMS

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