Our son has had this issue as well with hitting, biting which happened to him early on and I suspect he’s modeled that behavior afterwards. He’s a little over 2 years and it has been better with both work at home and at school (daycare) where teachers have redirected his behavior and put him on « body breaks » when we would get « handy ». He was never really ill-intentioned with it, it was more a knee jerk reaction to his frustration or emotions. He doesn’t really do it anymore now after a lot of work both at school and at home. I have researched and asked, and all I saw was « it’s a phase ». I do believe it’s a phase and things seem to be pointing out in that direction. When I tickle him and he’s not really into it, he’ll also tell him « mama, keep self » which is his way to tell me to keep my hands to myself. I was proud of him for expressing himself that way. It means he is learning from what we have been telling us. They go through developmental phases and it’ll pass ☺️
This is age appropriate unfortunately but I always use the term we don’t put our hands on friends and gentle hands