<qa>  What is the primary or atypical parkinsonism suggested by?- Secondary or atypical parkinsonism as suggested by: i. History of stroke, encephalitis, exposure to toxins or neuroleptics. ii. Neurologic signs of upper motor neuron or cerebella involvement, supranuclear gaze palsy, or significant autonomic dysfunction. iii. MRI scan with evidence of significant brain atrophy, lacunar infracts, or iron deposits in the putamen. 