Abstract
Focal dystonia is defined by anatomical distribution and represents a distinct entity
from generalized dystonia. Task-specific dystonia occurs in the context of specific
patterns of movement. Botulinum neurotoxin (BoNT) injections are the treatment of
choice in most cases. Several formulations are available; the approved indications,
dosing, and some administration details, differ between them. The major forms of focal
and task-specific dystonia are reviewed, along with the evidence for BoNT therapy,
the expected benefit and side effects, and practical points guiding the injections.
Keywords
botulinum - dystonia - therapy - task-specific - focal dystonia