Isolated voice tremor (IVT)

Diagnostic criteria

• There is no associated limb or head tremor
• There are no other neurological com-morbidities
• Some authors consider it to be a variant of essential tremor

Voice structures involved

Associated features

Differential diagnosis: main causes of voice tremor

Differential diagnosis: other causes of voice tremor

Treatment

References

1. Torrecillas V, Dwenger K, Barkmeier-Kraemer JM. Classification of vocal tremor using updated consensus-based tremor classification criteria. Laryngoscope Investig Otolaryngol 2021; 6:261-276.
2. Barkmeier-Kraemer JM. Isolated voice tremor: a clinical variant of essential tremor or a distinct clinical phenotype? Tremor Other Hyperkinet Mov (N Y) 2020; 10.
3. Patel A, Frucht SJ. Isolated vocal tremor as a focal phenotype of essential tremor: a retrospective case review. J Clin Mov Disord 2015; 2:4.
4. Paige C, Hopewell BL, Gamsarian V, Myers B, Patel P, Garrett CG, Francis DO. Characterizing the normative voice tremor frequency in essential vocal tremor. JAMA Otolaryngol Head Neck Surg 2018; 144:1169-1173.
5. Perez KS, Ramig LO, Smith ME, Dromey C. The Parkinson larynx: tremor and videostroboscopic findings. J Voice 1996; 10:354-361. 
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Related checklists

• Dystonic tremor
• Neuropathic tremor
• Holmes tremor
• Hereditary chin spasm (geniospasm)
• Bobble head doll syndrome (BHDS)
• Myogenic tremor
• Primary writing tremor (PWT)