Both of my twin girls have tantrumed but it has likely been for different reasons. One was hyper responsive and the other hypo. They are now 8 and doing very well.
OT, listening therapy and recognizing when they were getting out of sync has helped enormously. Also, for one, who is not a big eater, paying attention to her food intake has helped. In our case, some yoga, resistance, a quick jump on the trampoline or a run around the block when I see that they are getting unregulated typically does the trick.
Also - likely not an issue for your son - but one of my daughter's had seriously compromised vision, which led her to be off balance, and have double vision frequently.
While I knew that she had strabismus, I did not get good information from a serious of pediatric ophthalmologists and didn't realize how much her vision was impacting her behavior until we addressed this area.
I'm a 51 year old male that has always had trouble with sensory overload -- i.e tags in clothes, wind blowing on bare skin, clothing textures (can wear
My five year old was diagnosed with ADHD. Lately he started getting worst. In addition to always behaving hyper, he started laughing when bad things happen,