The age at which symptoms begin is referred to as age of onset. If an individual develops symptoms prior to approximately age 30, it may be referred to as early-onset or childhood-onset. (If the dystonia occurs during the teen years, the term adolescent-onset may be used.)
If symptoms develop after the age of 30, it is called late-onset or adult-onset.
These forms of dystonia are typically early-onset:
DYT1 generalized dystonia
Non-DYT1 generalized dystonia
Paroxysmal dystonia & dyskinesias
Rapid-onset dystonia-parkinsonism
X-linked dystonia-parkinsonism
These forms of dystonia are typically adult-onset:
Laryngeal dystonia (spasmodic dysphonia)
Hand dystonia (writer’s cramp)
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