It looks like he has crazy strep. If his doctor won't treat - find one who will. That's ridiculous that a doctor won't treat an ACTIVE strep infection just because he's asymptomatic. Never mind if he doesn't believe in PANDAS, what about rheumatic fever, sydenham's chorea or glomerulonephritis? Surely he's heard of those? It sounds like your doctor is not going to be helpful. I would seek a doctor knowledgeable about PANDAS as quickly as possible. Good luck!