### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
My kid is already in his third year on his pres-school years. But sudden changes happen recently since he always cry and vomit before entering the classroom. But once he is inside the classroom, he can be stabilized in 15 min and be back to its normal attitude. He still shows interest in going to school sicne he is very deligent in doing his homework and also ask for a study on his lesson. Based on the discussion with his teacher, it had started when he finished copying the writings in the board late and the teacher asked them to finish the writing on the board or else, they can t go home. It has been a month since that incident and until now, my kid always vomit and cry when entering the classroom. It come to a point that the teacher made an arrangement that she will be one to fetch the kid in the guardhouse as we are not also allowed to get into the school premise. Pls help how can I help on my kids recent behaviour. Do i need now to go to Pediatric Mental heath professional.

### output:

DearWelcome to ChatDoctorWe understand your concerns went through your details. The problem can be categorized as behavioral psycho somatic symptom. Naturally your child is not even aware of what is happening to him. Psycho somatic symptoms are such. But, there is nothing to worry. Almost all behavior psycho somatic disorders tend to vanish within some day. In your sons case, there is something which delays the cure. You noted one of the negative approach made by the teacher. I suspect more because that one negative approach is not enough to trigger the present behavior. I suggest you to talk to the teacher again for possible aggressive behavior. Take the name of any psychologist and try to get it. Usually, behavior therapy is the treatment method. Usually we are talking about behavior modification using rewards or punishment. Conditioning is also another option. I suggest you to consult a child psychologist. If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute detail possible. Hope this answers your query.  Further clarifications are welcome. Good luck. Take care.