I keep reading about how the deterioration of the cardiac sympathetic nerve could be a sign of PD onset. I certainly have had minor heart problems since youth, that went always undetected by conventional ectrocardiograms, and a family history of early deaths due to heart failure. What if PD is caused by congenital heart disease and not the other way around?

http://www.ncbi.nlm.nih.gov/entrez/q...=pubmed_DocSum