Information on the natural timeline for an older person with parkinson's?

Sequences. Initially, tremors at rest, mild slowing of function, or minimal walking problems present, and these sxs will respond to Dopamine agonists for about 2 yrs. For the next 5-7 yrs, pts do well on l-dopa, but later on, combination therapies are vital and even deep brain stimulation may be used. These phases proceed over 10-15 yrs, but do vary from pt to pt.