For causes, treatments, research information, etc. Young-onset patients tend to have focal dystonia that generalizes. In these cases parkinsonism may replace dystonia symptoms or may develop with persistent dystonia. Late-onset cases can present with parkinsonian features without dystonia. For causes, treatments, research information, etc.
Myoclonic movements are the most prominent clinical feature in the majority of people affected.
Rarely are the face and legs affected. The dystonic symptoms of prolonged muscle spasms or abnormal posture may also be present. The age of onset is in the first or second decade of life, although some cases of adult-onset have been reported. For causes, treatments, research information, etc. The classic features of RDP include involuntary dystonic spasms in the limbs, prominent involvement of the speech and swallowing muscles, slowness of movement, and poor balance.