He keeps rubbing his ears or reaching up to them, and looks as though something is bothering him. And he's now progressed to doing that and then hitting himself on the side of the head, either just in front or just above his ears. He does seem to be doing it deliberately, and not because it's amusing him or to get a response.
DH is worried by it, and I have no idea whether it's just something he's doing or whether it's a sign that there's a problem - any thoughts please?