Date: Friday 7 Nov. 2025

Id 56
Topic Spasticity
Speakers Bo Biering-Sørensen Danemark, Rajiv Reebye Canada, Peter Sanderson UK

Hyperkinetic movement disorders, known for their complex and overlapping movement patterns, present significant challenges in classification and treatment. This complexity is further compounded by evolving definitions and the involvement of various medical specialties. The inconsistency in definitions and descriptors complicates both research and clinical communication. Our goal is to provide an overview of current terms and definitions related to spastic movement disorders and other hyperkinetic movement disorders associated with central nervous system (CNS) lesions. During the session we will review the definitions of spasticity, dystonia, tremor, chorea, hemiballismus, athetosis, and myoclonus, highlighting the overlaps and challenges in differentiating these disorders. Various hyperkinetic movement disorders are similarly defined by their clinical features and etiologies, often showing significant overlap with spasticity. We will also propose a unified terminology and classification system for spastic movement disorders to enhance communication among healthcare professionals. The proposed classification system for spasticity incorporates elements from the Movement Disorder Society’s classification of dystonia and tremor, focusing on clinical features and etiology. This approach aims to create a common language for describing phenotypes observed in clinical practice, facilitating better communication and collaboration among healthcare professionals. Lastly, we will discuss ways to assess the different phenotypes in spastic movement disorders. The session will include numerous case studies for visual illustration of the phenotypes.

Chair Bo Biering-Sørensen

11H30 Welcome and session objectives

11H35 Current Definitions and Overlaps

11H45 Current Definitions and Overlaps

12H Assessing Phenotypes in Practice

12H10 OC ID 147 Predictive Markers for Spasticity Management: Integrating Clinical, Electrodiagnostic, and Surgical Approaches. Najlae Gadalah

12H15 OC ID 312 Digitalized treatment diary for managing spasticity. Bo Biering-Sørensen

12H20 DISCUSSION