I was about to attempt to write a definition of PD that could/would "fit" into one paragraph, Guy, but before doing that, I would like to know exactly your aim. Are you looking for a technical definition or a more simplified one that any average person can and WILL take the time to read and glean a good undstanding of this disease? Is it your aim to convey in ONE paragraph a message/definition that SO many people do not know about PD so that many more people will be inclined to "take up the cause"? I'd like to make an attempt at this...just need to know more about the "tone" of the paragraph.

Therese