Parkinsonism is a syndrome with six major characteristics: Tremor at rest, rigidity, bradykinesia, loss of postural reflexes, flexed posture, and freezing. 1 Parkinson's disease (PD) is the most common form of Parkinsonism, 1 but there are many other causes (i.e., drugs), 2 clinician should be alert to alternative diagnoses, especially if patients with Parkinsonism have atypical findings for PD...
