Take him for a walk, out in the car, sit him in front of the washer. Do you thik there is something wrong try NHS direct. I he is fed, warm clean and not ill put him in a room somewhere safe, close the door and walk away. I have done this with Frankie when she wouldn't sette because she wanted to be held, after two five minute checks, she was asleep and slept for four hours. My guess was she was over tired.