THere are many, many resources regarding diet for treating anyone with neurochemical imbalances, esp. check out these resources:
www.bodyecology.com
"The Gut and Psychology Syndrome" (book available via amazon.com)
these are probably the best nutritional resources.
as for the spiritual/emotional piece, there are a few things happening. (oh, I should tell you I am a craniosacral therapist and have worked with many kids with "labels and drugs").
First of all, the kids coming in now are totally intolerant on the spiritual level of our backward, 3D way of being. They need freedom of expression and HIGH vibration environments-definitely not what you find in public schools, or even most families, sadly.
Secondly, they must be met WHERE THEY ARE, which requires the "caregivers" In their lives to REALLY grow in themselves to meet them.
Check out the book "Sonrise". You'll have to google it. These parents were psychologists and had a child who became severely autistic, way back before it was "common." (early 80's, I believe). They essentially created their own "therapy" program which was just basically getting into their son's experience, and literally pulled him out of it. He ended up graduated from Yale (I believe) with honors. No kidding. They totally got the spiritual piece down. Please get this book!
When I work with kids like this, I see SO many factors-their own 'karma', diet, which is huge, family issues, also huge, and of course, societal issues. I think if these kids as social "canaries in the coal mine". They are showing us in their family's and in society where we are out of integrity and being inauthentic. It's a paradigm that humanity is manifesting now collectively to mirror where we are out of alignment with our spiritual truth.
You will be ok! Just love yourself, then you can see him clearly to love him!
BLESSINGS AND LOVE TO YOU!!!
www.forgiveandawaken.com