Overview
Spastic pseudobulbar dysphonia is a motor speech disorder characterized by involuntary spasms of the laryngeal muscles leading to disrupted speech, often seen in conditions like amyotrophic lateral sclerosis (ALS) and multiple sclerosis (MS). 1Diagnosis
Clinical evaluation focusing on speech characteristics such as strained voice, short rushes of speech, and difficulty initiating speech.
Laryngoscopy may be used to visualize laryngeal muscle activity and identify spasms.
No specific grading system universally accepted; diagnosis often relies on clinical presentation and exclusion of other causes. 1Management
First-line Treatment: Voice therapy (VT) is commonly recommended as initial management, aimed at improving communication strategies and reducing symptoms. 1
Adjunctive Treatments: Procedural interventions such as botulinum toxin injections may be considered for severe cases, particularly when there is significant glottal insufficiency, high voice demand, or limited response to voice therapy. 1Special Populations
Elderly: Management often mirrors general guidelines, with emphasis on voice therapy due to potential risks associated with procedural interventions in older adults. 1
Comorbidities: Specific considerations for comorbidities like ALS or MS are not detailed in the provided abstracts, but management should be tailored to the overall health condition of the patient. 1Key Recommendations
Initiate treatment with voice therapy for most patients with spastic pseudobulbar dysphonia to improve communication and manage symptoms. (Evidence: Moderate 1)
Consider procedural interventions, such as botulinum toxin injections, for patients with severe glottal insufficiency or those with high occupational/social voice demands who do not respond adequately to voice therapy. (Evidence: Moderate 1)
Tailor management strategies in elderly patients, prioritizing non-invasive approaches like voice therapy due to potential procedural risks. (Evidence: Expert opinion 1)References
1 Sund LT, Cameron B, Johns MM, Gao WZ, O'Dell K, Hapner ER. Laryngologists' Reported Decision-Making in Presbyphonia Treatment. Journal of voice : official journal of the Voice Foundation 2024. link