Isolated Cranial Tremors: A Reappraisal.

Isolated cranial tremors (face tremor, jaw tremor, vocal tremor, and embouchure tremor) are unusual examples of focal tremor disorders. The etiology and treatment of these troublesome and occasionally disabling conditions deserve more attention. In this review, we summarize current knowledge about these disorders and consider their etiologies and treatment approaches. We suggest changes to the current classification system of isolated cranial tremors based on shared phenomenology and treatment response.