Peggy,
Who wrote the bipolar child?
read the book "the bi-polar child" and see if that sounds like your son.
I know I sound like a broken record with this but eliminating artifical dyes, flavors and preservatives and adding essential fatty acids eliminated my 6 yr old's problems with anger and aggression, hitting, scratching, etc. We also limit sugar, juices, sodas, and corn syrup. Dairy products cause him problems too. We give him a lot of vitamin supplements that have helped a lot. His behavior improved after two weeks of changing his diet and he is still improving. Go to drrapp.com, foodallergy.org, feingold.org and greatplainslaboratory.com.
Instead of punishing his bad behavior, try giving specific positive praise for good behavior and try not to react to the bad behavior by yelling or spanking. Simply give the reason for not approving of the bad behavior. Try reading "Taking Charge of ADHD" by Barkley and "Power Parenting for Children with ADD/ADHD" by Flick.
And good luck. It took us 6 months to find the right combination of things for my son. I spent two hours a night on the Internet learning what was working for other parents. I did not want my son on a lot of medication due to his age and the side effects. He now takes only 5 mg Ritalin during school, but nothing on the weekends and during the summer.
I'm sure that the doctor here on the forum will have some decent advice, and I have no credentials what-so-ever to hand out "child behavioral health" information. However, I don't understand why you haven't been keeping him on his medication if that indeed seemed to help him. Wouldn't keeping him on his medication be an OBVIOUS thing to do, since his problems have escalated since being off of it??
Dear Regina,
By all means, you should obtain professional help for your son. His behavior is not explainable by ADHD alone. But, if you know the medication is helpful to him, there's no reason to stop for the summer.
Your son's aggressive behavior has been a problem for a long while, and it will not get better by simply letting time pass.
You also need some help around behavior management, and a clinician can help you with this also. For a child who is aggressive, spanking is a bad idea. It will not help, and it may actually exacerbate the problem.