I also have a foot that drags. My old neuro said it is not true foot drop. My new neuro said it is foot drop and is skeptical that it is caused by Parkinson's. I think you are lucky you at least had a misdiagnosis. I had some doctors tell me there was nothing wrong with me and it must be anxiety or depression. It took 7 years to get my diagnosis of Parkinson's because my symptoms are not typical. I now have a resting tremor and difficulty initiating movement, which are typical of Parkinson's, and I respond well to levodopa. However, I recently moved from Pennsylvania to Florida. Hence, a new neuro whom I need to give lots of explanations to.

BTW, yes the nausea improves. It comes back when you have to increase you dose though.