This randomized clinical trial with a crossover design aims to investigate the effects of neuromodulation through repetitive transcranial magnetic stimulation (rTMS) applied to patients diagnosed with laryngeal dystonia. Participants will undergo three experimental conditions: (1) rTMS alone, (2) rTMS combined with speech-language therapy, and (3) sham rTMS combined with speech-language therapy. The order of the conditions will be randomized. Each phase of the protocol will consist of five consecutive sessions.

Outcomes will include acoustic vocal quality parameters, perceptual-auditory voice assessment, self-ratings of vocal effort, smoothed cepstral peak prominence measures, and global perceived change following the intervention. It is expected that the study will contribute to a better understanding of the effects of the intervention on vocal outcomes, supporting the optimization and standardization of therapeutic protocols for laryngeal dystonia.

Inclusion Criteria:

• Adults (≥18 years) of any sex with a confirmed diagnosis of laryngeal dystonia
• Participants not undergoing botulinum toxin treatment at the time of the intervention
• Ability to provide informed consent
• Ability to complete all study assessments and intervention procedures

Exclusion Criteria:

• Other forms of dystonia
• Vocal fold lesions
• Vocal fold paralysis
• Contraindications to repetitive transcranial magnetic stimulation (rTMS)
• Inability to complete study assessments or intervention procedures

Participants, care providers, and outcome assessors will be blinded to intervention condition (active vs sham).