Association of serum vitamin D levels with clinical severity and recovery duration in cervical dizziness

Abstract Background Cervical dizziness (CD) is associated with altered cervical musculoskeletal and proprioceptive input, leading to impaired sensorimotor integration and balance control. Vitamin D deficiency has been linked to musculoskeletal pain, muscle dysfunction, and impaired postural stability; however, its role in CD remains unclear. Methods This prospective observational study included 210 patients diagnosed with CD. Serum 25-hydroxyvitamin D [25(OH)D] levels were measured at baseline, and participants were categorized into deficiency ( Results Lower serum 25(OH)D levels were significantly associated with higher baseline NDI, DHI, VDI-SS, and VDI-QOL scores (all p  p   Conclusions Lower serum vitamin D levels were associated with greater baseline clinical severity and longer recovery duration in patients with CD. These findings suggest that vitamin D status may be clinically relevant in the assessment of disease severity and recovery in this population. Further prospective controlled studies are required to clarify the clinical significance of this association.