Age at onset |
Infancy (birth to 2 years) |
Childhood (3–12 years) |
Adolescence (13–20 years) |
Early adulthood (21–40 years) |
Late adulthood (>40 years) |
Body distribution |
Focal (one region of the body) |
Segmental (two or more contiguous regions) |
Multifocal (two or more non-contiguous regions) |
Generalized (trunk plus 2 other regions) |
Hemidystonia (several sites on one side of the body) |
Temporal pattern |
Disease course |
Static |
Progressive |
Variability |
Persistent |
Action-specific |
Diurnal |
Paroxysmal |
Associated features |
Isolated or combined with another movement disorder |
Occurrence of other neurological or systemic manifestations |