Optic-Spinal Inflammatory Demyelinating Disease: (OS-IDD) patients in Siriraj Hospital
Songkram Chotik-anuchit MD*, Sasitorn Siritho MD*, Siri-on Tritrakarn MD**, Orasa Chawalprit MD**, Naraporn Prayoonwiwat MD*
Affiliation : * Neurology Division, Department of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand ** Department of Radiology, Siriraj Hospital, Mahidol University, Bangkok, Thailand
Objective : To study the demographic data of optico-spinal inflammatory demyelinating disease (OS-IDD) patients at Siriraj
Hospital between January 1997 and October 2006
Results : Retrospective study of OS-IDD patients.
Results : There were 84 OS-IDD patients. Cerebrospinal fluid analysis revealed higher white blood cell count and neutrophilia
in neuromyelitis optica (NMO) patients than those of multiple sclerosis (MS) patients. NMO had an average length of 4.1
segments of the cervical and 6.5 segments of thoracic cord involvement.
Conclusion : Among Thai OS-IDD patients, on the basis of clinical features, NMO was hardly differentiated from MS.
Keywords : Optico-spinal inflammatory demyelinating disease (OS-IDD), Multiple sclerosis, Neuromyelitis optica, Thai, Optic neuritis, Myelitis
