Over the past 4/5 weeks my 11 year old has started dong some weird things with his face. It started by him stretching his neck and sticking his chin out and up (this lasted a week). Then he did the opposite and was bringing his chin down to his chest and tilting his head to the side (for about another week). Now he has started doing odd things with his mouth. He is twisting his mouth into funny shapes, showing his teeth and ticketing his head to the sides.
Does anyone know what may have caused him to start doing this? I'm concerned and am considering taking him to the GP but don't want to to waste their time if it's just something that will go away. How long do I leave it?
Thanks