Safety and Feasibility of Tele-supervised Home-based Transcranial Direct Current Stimulation in Parkinson's Disease

The goal of this clinical trial is to learn whether home-based transcranial direct current stimulation (tDCS) is safe and practical for people aged 40 to 70 years with Parkinson's Disease. The study aims to find out if participants can use the tDCS device at home without serious side effects and whether it is easy for them to use on their own. Participants will first attend an in-person visit to learn how to use the tDCS device. They will then use the device at home once a day for 20 minutes over seven consecutive days. Video calls on days 2 and 3 will provide support and supervision. After each session, participants will complete brief online questionnaires about any side effects and how easy the device was to use. The study will also check if using tDCS at home improves motor symptoms in Parkinson's Disease by using a standard movement assessment.