i wanted to add that the Nicotine patches do ameliorate PD patients,whenever their age (even if you are in your 60's,70's even older ) but it is not recommended if you have a weak heart .
it works the very best for early Stages,but if you are ill and on meds since a long time,it will improve you too.
Personnally,i am 43,6'1 and 80 kg .
i wad diagnosed 9 years ago (then my pd was almost invisible ) and i deeply regret that i did not start it early,as i might have never developed it .
i was on Requip (such horrible memories with Agonists ) for the first 6/7 years and started Sinemet ,2 years ago at the similar time i started the Nicotine .

there is a gp29 site (google it ) in french ,with a topic about the Nicotine treatment,more than 70 people are relating their results with nicotine and ALL of them improved !!
Even a testimony of a man who gave it to his 82 years old mother,she could not quit her bed,was very ill and he decided, against his Neuro's will, to give it to his mum,as there was nothing much to loose .
and she did improve