Hemimasticatory spasm with lateral jaw deviations

Kumar, Neeraj; Krueger, Bruce R.; Ahlskog, J. Eric

doi:10.1002/mds.22304

Cited by 7 publications

(7 citation statements)

References 8 publications

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“…There is usually no involvement of the jaw-opening muscles, but there are at least two cases describing involvement of the lateral pterygoid (Table 1), one of them with associated lateral deviation of the jaw 5. There are no reports of bilateral involvement.…”

Section: Discussionmentioning

confidence: 99%

Hemimasticatory Spasm: Report of a Case and Review of the Literature

Christie¹,

Rodríguez-Quiroga²,

Arakaki³

et al. 2014

Tremor and Other Hyperkinetic Movements

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Section: Discussionmentioning

confidence: 99%

Hemimasticatory Spasm: Report of a Case and Review of the Literature

Christie¹,

Rodríguez-Quiroga²,

Arakaki³

et al. 2014

Tremor and Other Hyperkinetic Movements

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“…Atrophy and depigmentation on the chin have been observed in patients with HMS who also had involuntary lateral jaw movements due to involvement of the lateral pterygoid. 6,12 The presence of a vascular loop around the trigeminal nerve in patients with HMS and subsequent relief of symptoms following microvascular decompression has been reported. [13][14][15][16] Removal of the masseter nerve root attached to the temporomandibular joint has shown favorable outcomes.…”

Section: Jmdmentioning

confidence: 99%

Long-Term Outcome of Hemimasticatory Spasm

Ray

Kamble

Yadav

et al. 2022

JMD

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ObjectiveaaThis study aims to identify the demographic, clinical, and therapeutic characteristics of four patients with hemimasticatory spasm (HMS) seen in our outpatient department over a period of 20 years.MethodsaaWe performed a retrospective chart review of four patients with HMS who visited outpatient services in the Department of Neurology from 2001 to 2020.ResultsaaThe follow-up for all patients ranged from 2 years to 9 years. Three patients had facial or bucco-oral morphea. Two patients maintained long-term improvements in symptoms after being treated with botulinum toxin for 4-7 years, while one patient reported improvement in symptoms with treatment of carbamazepine that subsequently remitted after pregnancy.ConclusionaaThis report highlights the long-term outcome of HMS in our patients. Our patients reported a significant reduction or complete resolution of symptoms after treatment, and eventually, two patients were asymptomatic while off treatment.

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“…HMS may resemble HFS, but in contrast to facial nerve irritation or compression in HFS, the motor trigeminal nerve is affected in HMS [29]. Much less common than HFS, HMS is characterized by unilateral, involuntary, intermittent contractions of the jaw-closing muscles, resulting in brief twitches and/or spasms without actual jaw deviation [30,31]. Patients with HMS may have additional features such as facial hemiatrophy, connective tissue disorders such as scleroderma, and skin changes such as morphea [32][33][34].…”

Section: Hemifacial and Hemimasticatory Spasmmentioning

confidence: 99%

Peripherally-induced Movement Disorders: An Update

Lenka¹,

Jankovic

2023

Tremor and Other Hyperkinetic Movements

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Background: Peripherally-induced movement disorders (PIMD) should be considered when involuntary or abnormal movements emerge shortly after an injury to a body part. A close topographic and temporal association between peripheral injury and onset of the movement disorders is crucial to diagnosing PIMD. PIMD is under-recognized and often misdiagnosed as functional movement disorder, although both may co-exist. Given the considerable diagnostic, therapeutic, and psychosocial-legal challenges associated with PIMD, it is crucial to update the clinical and scientific information about this important movement disorder.Methods: A comprehensive PubMed search through a broad range of keywords and combinations was performed in February 2023 to identify relevant articles for this narrative review. Results:The spectrum of the phenomenology of PIMD is broad and it encompasses both hyperkinetic and hypokinetic movements. Hemifacial spasm is probably the most common PIMD. Others include dystonia, tremor, parkinsonism, myoclonus, painful leg moving toe syndrome, tics, polyminimyoclonus, and amputation stump dyskinesia. We also highlight conditions such as neuropathic tremor, pseudoathetosis, and MYBPC1associated myogenic tremor as examples of PIMD.Discussion: There is considerable heterogeneity among PIMD in terms of severity and nature of injury, natural course, association with pain, and response to treatment. As some patients may have co-existing functional movement disorder, neurologists should be able to differentiate the two disorders. While the exact pathophysiology remains elusive, aberrant central sensitization after peripheral stimuli and maladaptive plasticity in the sensorimotor cortex, on a background of genetic (two-hit hypothesis) or other predisposition, seem to play a role in the pathogenesis of PIMD.

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Hemimasticatory spasm with lateral jaw deviations

Cited by 7 publications

References 8 publications

Hemimasticatory Spasm: Report of a Case and Review of the Literature

Hemimasticatory Spasm: Report of a Case and Review of the Literature

Long-Term Outcome of Hemimasticatory Spasm

Peripherally-induced Movement Disorders: An Update

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