Clinical Report: Development and Onset of Lower Urinary Tract Symptoms in Multiple Sclerosis

Overview

This study investigated the timing and risk factors for the development of lower urinary tract symptoms (LUTS) in patients with multiple sclerosis (PwMS). Among 1167 PwMS analyzed, 61% experienced LUTS with a median onset 8 years after MS diagnosis, and urgency was the most common initial symptom. Higher age, disability level, cerebellar/pyramidal symptoms, and presence of oligoclonal bands were associated with earlier LUTS onset.

Background

Multiple sclerosis (MS) is a chronic demyelinating disease affecting approximately 2.8 million people worldwide, often impacting young adults. Lower urinary tract symptoms (LUTS) are among the most common complications of MS, significantly impairing quality of life by limiting social and occupational activities. Previous studies reported a wide prevalence range of LUTS in PwMS due to heterogeneous study designs and populations. Understanding the timing and risk factors for LUTS onset is critical for improving patient management.

Data Highlights

Key Findings

• 61% of PwMS developed LUTS during their disease course, with a median onset 8 years after MS diagnosis.
• Storage symptoms were the most common initial LUTS (77%), with urgency reported as the first symptom in 51% of cases.
• LUTS-free survival rates declined progressively over time, with only 20% remaining symptom-free at 20 years post-diagnosis.
• Higher age at MS diagnosis, greater disability (EDSS), presence of cerebellar/pyramidal symptoms, and oligoclonal bands in cerebrospinal fluid were significantly associated with earlier LUTS onset.
• Sex and MS type were not significantly associated with LUTS-free survival.

Clinical Implications

Clinicians should anticipate the development of LUTS in the majority of PwMS within the first decade after diagnosis, particularly urgency and other storage symptoms. Early identification of patients at higher risk—those older at diagnosis, with greater disability, cerebellar/pyramidal involvement, or positive oligoclonal bands—may allow for proactive monitoring and timely management to improve quality of life. Routine assessment of urinary symptoms should be integrated into MS care protocols.

Conclusion

Lower urinary tract symptoms are common and progressively develop in patients with multiple sclerosis, typically emerging within 8 years of diagnosis. Recognizing risk factors for early LUTS onset can guide clinicians in optimizing patient care and mitigating symptom burden.

References

1. Oppenheim 19th century -- Early observations of LUTS in MS
2. McDonald et al. 2017 -- Diagnostic criteria for multiple sclerosis
3. Expanded Disability Status Scale (EDSS) -- Kurtzke 1983
4. STROBE guidelines -- Reporting observational studies