Botulinum toxin has a variety of therapeutic uses. In the larynx, it has mainly been used to treat the voice disorder known as spasmodic dysphonia. It has also been used to treat some patients with laryngeal disorders affecting breathing.1- 3 These patients were generally found to have excessive laryngeal adduction during respiration.
Smith ME, Park AH, Muntz HR, Gray SD. Airway Augmentation and Maintenance Through Laryngeal Chemodenervation in Children With Impaired Vocal Fold Mobility. Arch Otolaryngol Head Neck Surg. 2007;133(6):610-612. doi:10.1001/archotol.133.6.610