Dystonia Scales for Children: Challenges and Obstacles in DBS Practice

Area of Science:

• Neurology
• Pediatric Movement Disorders
• Neurosurgery

Background:

• Pediatric dystonia frequently presents with co-occurring movement disorders and neurodevelopmental challenges.
• Existing rating scales for pediatric deep brain stimulation (DBS) candidates lack universal applicability and often require unvalidated combinations.
• Current assessment tools may not adequately capture the complexities of dystonia in this population.

Purpose of the Study:

• To systematically review and evaluate dystonia rating scales used for pediatric patients.
• To assess the suitability of these scales for candidates undergoing deep brain stimulation (DBS).

Main Methods:

• A comprehensive scoping review was conducted.
• The review identified and analyzed scales employed in the evaluation of pediatric DBS candidates.

Main Results:

• The Fahn-Marsden Dystonia Rating Scale was the most prevalent (94.3%), frequently used as a standalone measure (78.2%).
• Other scales like the Barry Albright Dystonia Scale (12.9%) and Unified Dystonia Rating Scale (5.6%) were less common.
• Quality-of-life assessments were included in only 12% of the reviewed studies.

Conclusions:

• Existing dystonia rating scales present limitations for evaluating pediatric DBS candidates.
• A novel pediatric dystonia scale is necessary to account for specific developmental and functional considerations.
• Improved assessment tools are crucial for optimizing DBS candidacy and treatment outcomes in children.