I'm very worried about my little boy (4yrs 10mths) who has just started school, but has developed some elaborate touching/symmetry rituals in the last 2 weeks. He has to kiss me goodbye the same number of times that I've kissed him, and in the same places as I have. He has to touch everything he touches with this left hand, then his right, then both feet. If pressing a button he needs to use both hands and freaks out if he can't. Trying to get him dressed is a nightmare as he's constantly touching things with different parts of his body. When watching TV he's touching the sofa with his head, his left cheek, his right cheek, one elbow then the other, then one knee and the other etc etc. He'll actively seek me out in order to touch me with all parts of his body in order. It is constant.
It's really upsetting me. He doesn't seem anxious, and seems excited about school, and school say it doesn't happen there. It's just at home and in the car.
I'm desperately worried. Does anyone have any advice?