Neuropathic pain versus restless legs syndrome: distinct and combined effects on balance and walking performance in multiple sclerosis.
Ozdogar A, Kaya E, et al. • Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology • 2026
NP-only and the co-occurrence of RLS and NP were associated with lower perceived walking performance in pwMS, while RLS severity showed small-to-moderate correlations with gait and balance outcomes.
Key Findings
Results
No significant differences were found between the four groups (NP, RLS, NP+RLS, and controls) on objective timed walking and mobility measures.
Timed 25 Foot Walk Test (T25FW) showed no significant differences between groups
Timed Up and Go (TUG) performance also showed no significant differences between groups
The cohort included 1143 participants divided into four groups: NP (n=115), RLS (n=166), both NP and RLS (n=75), and controls (n=787)
Results
Significant differences were found between groups on subjective walking perception, balance confidence, and single-leg standing measures.
Significant differences were found between groups regarding MSWS-12, ABC scale, and SLST (p < 0.05)
MSWS-12 (Multiple Sclerosis Walking Scale-12), ABC (Activities-Specific Balance Confidence) scale, and Single-Leg Stand Test (SLST) all demonstrated group differences
These differences were present despite no significant differences in objective timed performance measures
Results
The NP+RLS group showed significantly lower Single-Leg Stand Test performance compared to other groups.
SLST was significantly lower in the NP+RLS group
This suggests that the co-occurrence of neuropathic pain and restless legs syndrome has a compounding negative effect on static balance ability
The NP+RLS group comprised 75 participants
Results
Neuropathic pain, both alone and combined with RLS, was associated with higher perceived walking impairment as measured by the MSWS-12.
MSWS-12 scores were significantly higher in both the NP-only and NP+RLS groups
The RLS-only group did not show the same elevation in MSWS-12 scores
All symptomatic groups (NP, RLS, and NP+RLS) showed significantly lower balance confidence scores compared to controls.
ABC (Activities-Specific Balance Confidence) scale scores were significantly lower in all symptomatic groups
This finding applied to the NP-only (n=115), RLS-only (n=166), and NP+RLS (n=75) groups
Controls (n=787) had higher ABC scores, suggesting greater balance confidence
Results
RLS severity showed small-to-moderate correlations with gait and balance outcomes.
The correlations between RLS severity and gait/balance measures were described as 'small-to-moderate'
This suggests RLS severity has a limited but measurable relationship with walking and balance performance in pwMS
The correlation analysis was conducted across the study cohort
Results
No significant differences were found between the four groups regarding MRI results.
MRI findings did not differ significantly across the NP, RLS, NP+RLS, and control groups
This suggests that the observed differences in walking and balance outcomes were not explained by differences in lesion burden or other MRI-detectable pathology between groups
A comparative analysis of MRI results was a stated aim of the study
What This Means
This research examined how two common symptoms in multiple sclerosis (MS) — neuropathic pain (burning or electric-type pain caused by nerve damage) and restless legs syndrome (an uncontrollable urge to move the legs, especially at night) — affect a person's ability to walk and maintain balance. Over 1,100 people with MS were divided into four groups based on whether they had neuropathic pain only, restless legs syndrome only, both conditions together, or neither condition. The researchers then tested their walking speed, mobility, balance confidence, and ability to stand on one leg.
The study found that while objective timed tests of walking speed and mobility showed no differences between groups, people with neuropathic pain — whether alone or alongside restless legs syndrome — reported significantly greater difficulty walking in their daily lives. People with all three symptomatic conditions (neuropathic pain alone, restless legs alone, and both together) reported lower confidence in their balance. Those with both conditions combined had the most difficulty with single-leg standing, a measure of static balance. Notably, brain MRI results did not differ between the groups, suggesting these functional differences are not easily explained by visible brain lesion differences.
This research suggests that neuropathic pain in particular has a meaningful impact on how people with MS perceive their own walking ability, and that having both neuropathic pain and restless legs syndrome together may compound balance difficulties. Clinicians managing MS may benefit from actively identifying and treating these co-occurring symptoms, as they appear to negatively affect patients' functional confidence and balance even when standard objective walking tests do not detect differences.
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Ozdogar A, Kaya E, Ozcelik S, Ünal G, Ozakbas S. (2026). Neuropathic pain versus restless legs syndrome: distinct and combined effects on balance and walking performance in multiple sclerosis.. Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology. https://doi.org/10.1007/s10072-026-09365-x