We also have a 4.5 yo son who sounds much like yours. We have been struggling with tantrums with him for over a year now. We have tried every suggestion that has come down the path. A while back I spoke with a lady who is a neurodevlopmentalist who offered some ideas I’d never heard of that did help. She talked to me about environmental factors (food, smells, etc.) that could be agitating him and/or setting him off or on edge. She also gave us some suggestions of drills and massage type things that we could do to work with him to help normalize his sensory system (which she said with some children like this it has not normalized and they tend to have more behavioral problems because of it – i.e. when they just look at you when spanked as if it doesn’t hurt). I would have thought all of this was crazy a year ago, but now that we have seen it work, it has made a difference. If you are interested in her info, PM me and I’ll give it to you.
Another thing we have done with all our boys (as they all struggle with self control issues) is really try to teach them HOW to get their self control in different situations. When they yell out or stomp because they heard an answer they didn’t like (from me or their brother) I will get them to stop, calm down and then walk them through the proper response. It is arduous, but I see slow glimpses that it helps. I just realized as I kept telling them to calm down and get their self control that they didn’t always know how.
I see you have a 2 yo too – we have two 2.5 yos. I have noticed as they got older my older son started showing out more and having more discipline problems. We started really emphasizing that he was older and should be more mature and not react like the babies did. We try to point out to him the things he can/gets to do that the youngers don’t and try to schedule special time with each of us and him. We have seen that help too. It seems as if when they were babies and they just took up more time, it didn’t matter to him, but as they have started talking and doing funny things and taking more affection, he reacted to that. It was as if he didn’t care what type of attention he was getting, good or bad, he just wanted attention.
And lastly (I could go on for days with discipline advice, not from myself but from many friends wiser than me!) one little motto of sorts we have at our house is that “slow obedience is no obedience” As hard as it is for me at times, I try to discipline them when they don’t obey the 1st time – this really helps us all – I am not repeating myself and they know that they don’t have the option to obey whenever they want to. I think it is as much discipline for mom as it is for the kids in my case!
I hope things get better