I don't know if this says much or not, but we have to have a translator to read the article:

Rev Med Suisse. 2009 Aug 26;5(214):1650-5.

[Management of Parkinson's disease in 2009]
[Article in French]

Maertens de Noordhout A.

Service universitaire de neurologie, Hôpital de la Citadelle, Bd du 12e de ligne, 4000 Liège, Belgique. al.maertens@chu.ulg.ac.be

The cause of Parkinson's disease remains unknown and no cure or prevention exists so far. Levodopa remains by far the most potent symptomatic therapy, but induces side-effects such as motor fluctuations and abnormal movements, which can somewhat be counterbalanced by optimizing levodopa plasma levels or acting at receptors level with long half-life dopamine agonists. In severe cases, functional surgery with deep brain stimulation can be offered. Some non-dopaminergic symptoms like dementia, freezing, postural instability or dysautonomia do not respond to dopaminergic drugs and need special care.

PMID: 19772196 [PubMed - indexed for MEDLINE]