This reply was originally posted by user Erised in ADDitude’s now-retired community.
I would also look into Sensory Processing Disorder (SPD)
What that is: Children with sensory processing issues can be oversensitive to sights, sounds, textures, flavors, smells and other sensory input.
You mentioned “hitting the child with something or wants to wrestle, etc. He doesn’t want to hurt, he just wants to be rough ALL the time”
So constant contact and pushing or wrestling. Could do with the amount of stimulation or lack of it that he is getting. Could also try asking him why he likes to hit/wrestle be rough so much? What does he get out of it? Feeling calm? Expend excess energy?