Clinical features that distinguish<unk> s from idiopathic PD include symmetrical onset, a lack of or irregular resting tremor, and a reduced response to dopaminergic drugs (including levodopa). Additional features include bradykinesia, early-onset postural instability, increased rigidity in axial muscles, dysautonomia, alien limb<unk> , supranuclear gaze palsy, apraxia, involvement of the cerebellum including the pyramidal cells, and in some instances significant cognitive impairment.
Parkinson-plus syndrome
Huntington's disease-like syndrome
X-linked dystonia parkinsonism
Sydenham's chorea
Wernicke–Korsakoff syndrome
Stratton Parker syndrome
Dopamine-responsive dystonia
Progressive supranuclear palsy