Dysphonia due to tremor.

Spasmodic Dysphonia and Thalamic Deep Brain Stimulation: Long-term Observations, Possible Neurophysiologic Mechanism and Comparison of Unilateral Versus Bilateral Stimulation

The association of upper extremity essential tremor and several types of other dystonias, including spasmodic dysphonia, have been reported in the past [1,2]. We previously reported a brief case description of a patient with essential tremor (ET) of the hands and adductor spasmodic dysphonia (SD) with vocal tremor who responded to bilateral thalamic DBS with six month follow up [3]. Our patient...

Adduction spasmodic dysphonia, vocal tremor and muscular tension dysphonia: is it possible to reach a differential diagnosis?

Tremor in speakers with spasmodic dysphonia

the objective of this work is the estimation of vocal tremor in patients with spasmodic dysphonia before and after treatment, and the comparison of their tremor characteristics with those estimated from healthy speakers. as an outcome, a new tremor attribute is introduced, the deviation of the modulation level and a novel method is proposed for classifying speakers according to the prevalence o...

Laryngeal electromyography in movement disorders: preliminary data.

This study describes preliminary laryngeal electromyography (LEMG) data and botulinum toxin treatment in patients with dysphonia due to movement disorders. Twenty-five patients who had been clinically selected for botulinum toxin administration were examined, 19 with suspected laryngeal dystonia or spasmodic dysphonia (SD), 5 with vocal tremor, and 1 with Gilles de la Tourette syndrome (GTS). L...

Chemodenervation of the Larynx

Botulinum neurotoxin (BoNT) has existed for thousands of years; however, it was not medically utilized until investigations into its therapeutic use began in sincerity during the late 1970s and 1980s. This, coupled with the reclassification of spasmodic dysphonia as a focal dystonia, led to the use of chemodenervation for this disorder, which has since become a refined technique. Indeed, due to...