Speech-induced lingual dystonia

Felı́cio, André Carvalho; Godeiro-Júnior, Clécio; Moriyama, Tais; Laureano, Maura Regina; Félix, Evandro Penteado Villar; Borges, Vanderci; Silva, Sônia M.A.; Ferraz, Henrique Ballalai

doi:10.1590/s0004-282x2010000400034

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…Due to the low prevalence of lingual dystonia, it has previously been reported on in single case reports [15,26,33,35,36,37,38,39,40,41,42] or case series [7,8,9,10,11,12,13]. This study is the largest series of cases with lingual dystonia reported thus far.…”

Section: Discussionmentioning

confidence: 81%

Botulinum Neurotoxin Therapy for Lingual Dystonia Using an Individualized Injection Method Based on Clinical Features

Yoshida

2019

Toxins

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Lingual dystonia is a debilitating type of oromandibular dystonia characterized by involuntary, often task-specific, contractions of the tongue muscle activated by speaking or eating. Botulinum neurotoxin (BoNT) has been used to treat lingual dystonia; however, it is known to cause serious complications, such as dysphasia and aspiration. The purpose of this study was to evaluate the efficacy and adverse effects of individualized BoNT therapy for lingual dystonia. One-hundred-and-seventy-two patients (102 females and 70 males, mean age: 46.2 years) with lingual dystonia were classified into four subtypes based on symptoms of involuntary tongue movements: protrusion (68.6%), retraction (16.9%), curling (7.6%), and laterotrusion (7.0%). Patients were treated with BoNT injection into the genioglossus and/or intrinsic muscles via individualized submandibular and/or intraoral routes. Results were compared before and after BoNT therapy. Botulinum neurotoxin was injected in 136 patients (mean: 4.8 injections). Clinical sub-scores (mastication, speech, pain, and discomfort) in a disease-specific rating scale were reduced significantly (p < 0.001) after administration. Comprehensive improvement after BoNT injection, assessed using the rating scale, was 77.6%. The curling type (81.9%) showed the greatest improvement, while the retraction type showed the least improvement (67.9%). Mild and transient dysphasia occurred in 12.5% of patients (3.7% of total injections) but disappeared spontaneously within several days to two weeks. No serious side effects were observed. With careful diagnosis of subtypes and a detailed understanding of lingual muscle anatomy, individualized BoNT injection into dystonic lingual muscles can be effective and safe.

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Section: Discussionmentioning

confidence: 81%

Botulinum Neurotoxin Therapy for Lingual Dystonia Using an Individualized Injection Method Based on Clinical Features

Yoshida

2019

Toxins

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“…The patient eventually noticed the dramatic amelioration of her symptoms when chewing gum or pressing her neck (video 1). These could have been acting as sensory tricks for her isolated speech-induced lingual dystonia 1. There was no history of orofacial injury or recent viral infection that could have caused secondary lingual dystonia.…”

Section: Descriptionmentioning

confidence: 99%

Sensory tricks for isolated speech-induced lingual dystonia

2015

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“…[34][35][36] In severe cases it is associated with tongue biting and has even caused life threatening airway obstruction. 37 Speech can be unintelligible and lingual dystonia can impact swallowing significantly resulting weight loss. 38 While idiopathic lingual dystonia does occur, it is very rare and therefore it is important to evaluate for secondary causes.…”

Section: Lingual Dystoniamentioning

confidence: 99%