We have this problem too, and the social difficulties it causes. My sympathies.
There could be lots of reasons depending on who is looking at your son. I would get an occupational therapy evaluation done on him for sensory issues. I would also take him to a psychologist or a behaviour team for evaluation. If your insurance won't fund these, and you are in the USA, then tell your local school district in writing that you want him evaluated and pester them until they do.
We saw a behaviour team and a psychologist when my older son was nearly three, after his ped had fobbed us off and told us he was at the extreme end of normal at 2 1/2. The psychologist told us he had good empathy and good attachment and it was 'breakout' violence rather than any kind of emotional disorder, and that he would mellow out by kindergarten. We still think that the doc was right about the cause of the hitting, but wrong that it would mellow out. When this year my son was very unhappy in preschool and still having problems at age four (he's now 4.10), we took him for an OT evaluation and he was diagnosed with sensory processing disorder. He LOVED the OT visit and we are very hopeful that occupational therapy will help him feel more comfortable and less frustrated and high strung. I wish we had not waited so long, but more aggressively pursued our sense that something was wrong.
I don't think you're over-reacting. It would be a good idea to try to get this sorted out before kindergarten. Even if there is really not much at all going on, I bet your son will ENJOY the evaluations: mine loves them!
There could be lots of reasons depending on who is looking at your son. I would get an occupational therapy evaluation done on him for sensory issues. I would also take him to a psychologist or a behaviour team for evaluation. If your insurance won't fund these, and you are in the USA, then tell your local school district in writing that you want him evaluated and pester them until they do.
We saw a behaviour team and a psychologist when my older son was nearly three, after his ped had fobbed us off and told us he was at the extreme end of normal at 2 1/2. The psychologist told us he had good empathy and good attachment and it was 'breakout' violence rather than any kind of emotional disorder, and that he would mellow out by kindergarten. We still think that the doc was right about the cause of the hitting, but wrong that it would mellow out. When this year my son was very unhappy in preschool and still having problems at age four (he's now 4.10), we took him for an OT evaluation and he was diagnosed with sensory processing disorder. He LOVED the OT visit and we are very hopeful that occupational therapy will help him feel more comfortable and less frustrated and high strung. I wish we had not waited so long, but more aggressively pursued our sense that something was wrong.
I don't think you're over-reacting. It would be a good idea to try to get this sorted out before kindergarten. Even if there is really not much at all going on, I bet your son will ENJOY the evaluations: mine loves them!