Farrer (in Nature, 2006) displays several conditions that come under the popular rubrik of parkinsonism, e.g. synucleiopathies, including Parkinson disease;
tauopathies, including dementias like frontal-temporal dementia and post-encephalopathic conditions, and other conditions with parkinsonian signs, including drug-induced and vascular. I am suspicious of one that was not in Farrer's ...