Three Year Parkinson's Progression Study - EMJ

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Study Tracks Early Parkinson’s Symptoms Over Three Years

RESEARCHERS have tracked how symptoms and daily challenges evolve during early Parkinson’s disease using wearable technology and patient reports. The three-year study reveals that while some symptoms remain stable, the functional impacts of Parkinson’s increase significantly.

Understanding Early Parkinson’s Symptom Progression

Monitoring disease progression in Parkinson’s remains a major challenge for clinicians and researchers. While many studies focus on measurable motor symptoms, the everyday impacts experienced by people with Parkinson’s are often less well captured.

In this study, researchers sought to map the prevalence and perceived burden of symptoms in people living with early Parkinson’s. By combining patient reported experiences with longitudinal monitoring, the research aimed to identify which aspects of Parkinson’s change most noticeably over time.

Longitudinal Tracking of Parkinson’s Symptoms

The study followed 32 participants with early Parkinson’s over a three-year period, with participants completing qualitative interviews annually to report symptoms and their impacts on daily activities. Researchers analysed the data using nonparametric generalized linear mixed models to assess changes in symptom frequency and bothersomeness.

Across all study years, the most bothersome motor symptoms included tremor, gait difficulties, balance problems, fine motor challenges, slow movements, and stiffness. Non motor symptoms frequently reported by participants included fatigue, sleep problems, mood changes, difficulty thinking, and quiet voice. Among these symptoms, only gait and balance changed significantly over the study duration.

In contrast, several functional impacts associated with Parkinson’s showed significant changes. Participants consistently reported an increased work of living and greater effort to perform usual daily activities by year 3, reflecting the growing day to day burden of the condition.

Implications for Parkinson’s Care and Research

Although many core symptoms of Parkinson’s remained relatively stable in perceived severity during the three-year period, the broader functional impacts of the disease became increasingly prominent. This finding suggests that traditional clinical measures may not fully capture the evolving challenges experienced by people living with Parkinson’s.

Researchers also noted that participants described developing coping strategies and making positive life adjustments over time, which helped mitigate the perceived burden of symptoms. These adaptive responses highlight the importance of supportive care and personalised management approaches.

Future studies combining wearable monitoring with patient reported outcomes may offer a more comprehensive way to track disease progression. Such approaches could help clinicians better understand how Parkinson’s affects daily life and support the development of patient centred clinical trials and treatment strategies.

Reference

Mammen JR et al. Three years later: tracking bothersome symptoms and impacts for people with early Parkinson’s disease. Journal of neurology. 2026;273(2):93.

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