My wife is having parkinson since last 18 years, is on syndopa totalling about 700 mg per day in devided doses. She is now suffering from severe dementia since last 6 months and confined to bed. she has lost all her ADL capabilities and totally disabled.

our neurologist put her on exelon 10 patch since last 5 months and to my astonishment she recovered from dementia almost 90%. Today she can do all her daily routines , socialise, attend functions and parties and her cognative abilities have improved to a great extent. My question is how long this stage of improventlasts? will she be stable with the continuation of the patches? Any body has any experience about this? However, her parkinsons is still bothering her but is under control by medications. We live in India, Bangalore.