J. -
I am surprised that a clinic would recommend behavior therapy without even seeing your son. the things you describe coudl be a result of a variety of things and many if not all ( I don't know your son) coudl be helped with OT. Behavioral therapy will look at everything he does as a behavior that must be chnged. It will not take into account anything that may be impacting him physically or neurologically. The therapy is completely geared to correct behavior.
ABA (Applied Behavior Analysis) is typically used for children with autism, PDD or similar diagnoses. The goal is to use operant training to correct behavior, not unlike how you would train a dog - reward good behvior ignore or deter bad behavior. It does nothing to get to the underlying issues that may be impacting your son because ABA beleives that all behavior comes as a response from teh environment. So, if he's tantrumming, then there wmust be some kind of reward he's getting for it, or the behavior woudl stop. See? http://www.abainternational.org/
OT, OTOH, has a chance of really helping your son with what might be causing the behavior. here is some info on ABA. I think I already emailed you, recommending Amy Zier's clinic in Libertyville (www.amyzier.com). I could also recommend Michele Ricamato's clinic in Carol Stream ###-###-####. They are great and will treat your child as a special individual.
If you think your child has issues beyond sensory, you may want to check out Floortime, another intervention used for children with developmental delays and for those on the spectrum. It is much more comprehensive, works on social/emotional development, cognitive development, and will also work to help with theunderlying sensory or other issues that may be impactingyour child. We do this therapy, along with OT, with my twin boys. I may have told you that one had sensory integration disfuntion, and one PDD. Both are doing great.
You can check out some information on floortime at www.floortime.org and at www.chicgofloortimefamilies.com.
The first thing I would do is get the results of your eval. And, I'd get into a good clinic that really specializes in sensory issues. They should be able to guide you from there, and to recommend othe rtherapies, Wiht floortiem you coudl do that intervention with anyone - I do it with my some who has no issues. But, ABA, is anoher beast. I'd look into that carefully before you pursue it.
Good Luck! Feel free to email back if you have any questions.
R.
P.S. You may also want to look into hyperbaric oxygen treatment. I don't knowanything about your son's situation, but it has helped many kids with brain damage and with neuroligical or other issues.