Dr Carol is one of the research doctors in SFO about PANDAS. Very hard to get into but if you can she is the one of the best on west cost. I spoke with her couple of times and when i told her about my son she said it matches with PANDAS. She does lot of research on it and keeps in touch with Dr Murphy in Fl.
Second if your kid is getting too much infections try using Xylitol, Xlear Nasal Wash frequently.
Xylitol is among bacteria’s natural enemies so can do prevention up to some extend. Use it once kids come back from school or playground , parties.
http://www.xlear.com/xlear/