Dopamine-responsive dystonia
Dopamine-responsive dystonia (DRD) also known as Segawa syndrome (SS), is a genetic movement disorder which usually manifests itself during early childhood at around ages 5–8 years (variable start age).
| Dopamine-responsive dystonia | |
|---|---|
| Other names | Segawa syndrome, Segawa's disease, Segawa's dystonia, hereditary progressive dystonia with diurnal fluctuation |
| Specialty | Neurology, medical genetics |
Characteristic symptoms are increased muscle tone (dystonia, such as clubfoot) and Parkinsonian features, typically absent in the morning or after rest but worsening during the day and with exertion. Children with dopamine-responsive dystonia are often misdiagnosed as having cerebral palsy. The disorder responds well to treatment with levodopa.
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