Welcome to the board! My son has neuro-psych Lyme as well. When we first started treatment, we started him with homeopathy. The first month or so went really well, then they really started treating the Lyme and we were dealing with the Herx from hell. The homeopath who was supposed to be a "specialist in Lyme" had never seen anything like it and basically threw up his hands and told us to call him, when Dan got out of the psych unit.
If I had it to do over, I would have started very, very, very, slowly with the Lyme remedy and let him herx (hopefully it would not have been so bad), then increase, wait for another herx, etc. With psychiatric symptoms, slower is better. We then put Dan on abx. He has been in treatment for about 2 1/2 years now and we are beginning to see some real results.
Is your son on any psych meds? It is really important to see a Lyme Literate psychiatrist. We see one in New Jersey, who has been great. We only saw him for the initial visit and the rest of the time we do phone consults.