T.A.
A.,
As an adoptive mother of 4 really wonderful, but uniquely special, kids, I can really feel with you. This is not an easy road.
There is a fantastic book called "When Love is Not Enough" (author Thompson?) that was very good for our family. You do have to read some of it with a grain of salt, but much of it is simply very helpful.
If you are only suspicious that your son could have it, I would work very slowly and carefully, as some options out there can cause more problems. Behavior modification is my first choice.
You are more than welcome to contact me via email (____@____.com) if you have specific questions and really need a heart that understands all that goes into realizing that your child really needs help.
God bless,
T.