S.M.
Please listen to Yvonne. Don't bite back. Use compassion and love and gentleness. Look into his eyes and smile. Hug, cuddle. Massage.....children who are aware of their own bodies, are aware that other people have bodies that can feel pain.
Was this child strapped into restraining devices a lot as an infant? ie, swing, bouncer, exersaucer, car seat....Theese things do not allow the child to move on his own, and movement an exploration are how infants become body aware and their brains develop to full potential. I know it is difficult to spend time keeping or babies company and entertained, but it is crucial for their development.
Babies need to be on the floor figuring out how to move. They also need to be nurtured and held in order to learn to love. Children who are left alone too much become aggressive.
I am also aware that possible brain dysfunctions can arise from vaccines.
Have you tried "time in" ? When the child sits with a loving adult as opposed to sitting alone in a time out.
You can visit developmentalmovement.org
or search developmental movement for other sites.