I was experiencing lightheadedness if I turned to the right while lying in bed. It was enough of a concern that I had a CT scan after a few falls to be sure there wasn’t a brain bleed. Fortunately it was all clear. Has your neurologist done any tests to determine what may be causing the lightheadedness. My neurologist has not been able to discover a cause as yet but it is actually getting better. With PD who knows? I hope the discover an answer as it can certainly be disconcerting. Thea DeStephano Community Team Member