My 3 year old son has recently (becoming frequent within the last couple days) that I can only identify as a nervous tic of some sort. He has been opening his mouth wide, it looks like he is popping his ears. Sometime quickly, sometimes for a couple seconds. I asked him why he was opening his mouth. I asked him if his ears, throat or teeth were hurting. He said no. I feel like I did the wrong thing by drawing attention to it, but I wanted to know if it was something I could help with. Ever since I asked whenever he does it he hides his face like he did something wrong or like he is embarrassed. I told him that he isn't in trouble and it is ok if he wants to open his mouth, but if something hurts him he should tell me or Daddy. He had his 3 year check up a few days ago and his ears and throat were fine. Developmentally he is on track. I am just not sure where it could be coming from. I think I am going to being him into the dentist for a check up and make sure thing are ok in that capacity. I have read a little about nervous ticks in young ones and some articles say to ignore it and it will go away, but I worry and this is the first time I have dealt with anything like this.