ds2 has just turned 1 and has started hitting himself on the head with duplo bricks, toy cars and his hand. If I stop him he moves to the door and starts banging the back of his head on it. When he is in his car seat he bangs his head on that. If you give him a kiss he trys to bang his head off yours.
I have tried saying no, ignoring it putting him down etc nothing works.
He does it quite hard so has numerous bruises on his forehead and ds1 has a black eye after giving him a kiss good night.
Any ideas on how to stop him please?