Study of Clinical Features to Distinguish Laryngeal Dystonia and Voice Tremor Using Advanced Voice and Imaging Tests

What this Trial Is About

Researchers are studying laryngeal dystonia LD and voice tremor VT, two neurological voice disorders that affect speaking by causing strained voice quality or shaky voice, respectively. This observational study aims to better distinguish these conditions using both current and new clinical assessment tools, as misdiagnosis is common due to overlapping symptoms and unreliable criteria. Improving diagnosis will help guide better treatment and understanding of these disorders. Participants include patients with LD or VT and healthy volunteers. They will undergo comprehensive clinical evaluations including acoustic, aerodynamic, and respiratory kinematic recordings, as well as laryngeal electromyography EMG, nasoendoscopy, and real-time magnetic resonance imaging MRI of the upper airway. These assessments will analyze voice patterns and movement during various speech tasks to identify distinguishing features. Computational modeling will also be used to simulate acoustic output related to each condition. During the study, participants will complete detailed voice assessments and imaging procedures to characterize their voice symptoms over a five-year period. Researchers will track differences in voice symptoms and use multiple clinical tools to quantify voice patterns and muscle activity. The study includes healthy controls for comparison. The total participation timeline and monitoring details are organized to provide thorough evaluation and data collection for accurate diagnosis and classification of these voice disorders.

Characterization of Clinical Phenotypes of Laryngeal Dystonia and Voice Tremor