SLC6A3 and Parkinson disease: She was diagnosed with Parkinsonism, havingthe cardinal signs of resting tremor, rigidity, and bradykinesia, along with commonsigns of masked facies and shuffling gait, with other possible diagnoses ruled out.A SPECT DaTscan showed normal dopamine transporter uptake in bilateral striata(Fig 1), which was consistent withdrug-induced Parkinsonism.