A study conducted in Kerala states that Quality of Life of patients with Parkinson's Disease (PD) depends on their ability to perform ADL.
"...difficulty to do leisure time activities, performing household activities, difficulty to carry bags, problems with walking, difficulty to get around in public places, need for assistance to go out of house, fear of fall, etc. can be considered as the main factors that influence the quality of life of patients with Parkinson's disease. Regarding the activities of daily living...difficulty to take bath without assistance, difficulty if [sic] dressing and grooming, difficulty to write clearly, cutting up of food and disability [sic] in drinking water from glass without spilling also can be considered as a factor [sic] which affect the qualify of life of patients with Parkinson's disease" (p.15)
Occupational therapists have a huge role to play in rehabilitating patients with PD.