Hi Sunflower,
Yes, infections play havoc with our symptoms. As Rick said, I had a bad gum and tooth infection last year, and my meds would not work, and I was near paralysed. I got rid of the gum infection by using a TCP mouthwash, and had the tooth extracted, and everything returned to normal. I take a spoon of Manuka honey daily now which kills infections.
One thing puzzles me about your case, I only get dyskinesia when I am "on", at the peak of my dose. You say you are either on, or dyskinetic, implying that you are dyskinetic when you are "off". Have I misinterpreted what you mean?
Ron