Psychogenic parkinsonism.

Parkinsonism can be psychogenic, and psychogenic parkinsonism is about 10% of psychogenic movement disorder patients. Patients can present with any feature or combination of features of organic Parkinson's disease. There are clinical clues that can lead to the correct diagnosis, and laboratory testing with clinical neurophysiology or DAT (dopamine transporter) scanning can be helpful as well. Patients may have both organic Parkinson's disease and psychogenic parkinsonism, and this might be considered a psychologically induced aggravation of the organic disorder. Published by Elsevier B.V.