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My daughter suffers from sensory issues as well as some AD issues.
Doctors are very much not up to date on how to handle these (and other) problems.
One thing you have to watch out for - and may be the case with your child - is that the doctors prescribe stimulants.
It's "supposed" to stimulate the part of the brain that isn't functioning properly so the child can control their emotions and outbursts but so often it takes a LONG time to get the dosage correct and for some kids - it plain out backfires.
It's a long process - work closely with your doctors and I'd suggest working with a psychopharmacologist regarding medicines doctors prescribe for your children.
Public schools are not even close to being able to deal with kids with these (and other) issues. We send our daughter to
http://www.childrensinstitute.com .
They are one of a handful of schools that have the training and personel to deal with kids that need help. My wife's best friend lives in Chicago - but stays in Seattle during the school year so her son can attend.