Jiraporn JitprapaikulsanSasitorn SirithoNaraporn PrayoonwiwatMahidol UniversityBumrungrad International Hospital2018-12-112019-03-142018-12-112019-03-142016-06-15Journal of Neuroimmunology. Vol.295-296, (2016), 75-7818728421016557282-s2.0-84964504866https://repository.li.mahidol.ac.th/handle/123456789/40805© 2016 Elsevier B.V. Vitamin D status of Thai clinically isolated syndrome (CIS), multiple sclerosis (MS) and NMO/neuromyelitis optica spectrum disorders (NMOSD) patients were prospectively collected (N = 130). Its associations with disability score, and disease activity were sought.Mean vitamin D levels were not significantly different (CIS, 22.18 ± 8.2; MS, 23.41 ± 11.9; NMO/NMOSD, 23.54 ± 9.3 ng/mL; p = 0.857). Prevalence of vitamin D insufficiency and deficiency (≤. 30 ng/mL) was 73-80%. Neither disability score nor disease activity was associated with vitamin D level.Vitamin D insufficiency was common in Thai CIS, MS, and NMO/NMOSD patients without association with disability or disease activity.Mahidol UniversityImmunology and MicrobiologyArticleSCOPUS10.1016/j.jneuroim.2016.03.016