Vitamin D level status in Thai neuromyelitis optica patients

Abstract 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) w as 73 – 80%. Neither disability score nor disease activity w as associated with vitamin D level. Vitamin D insufficiency w as common in Thai CIS, MS, and NMO/NMOSD patients without association with disability or disease activity.