B.
My Daughter has aniexty and although she manafests in a different way, her mind may think in the same way. He is old enough to talk to you about what is bothering him(or maybe dad). Bring up some of the transition issues you talked about and get his thoughts. I know my daughter needs lots of reassurence when she has a change in her routine. She is very down on her self. Im not sure but I thnik part of having a bowel movement is satisfaction and relaxation, sounds strange but Im sure we can all agree that its a good feeling most times. If your son is feeling down he may be depriving himself ofd that or unable to relax to get the job done. Beofre tring to give laxatives to force the issue(which could have him pooping his pant at school not a good thing!) try talking it out and reassuring him. Maybe if possible take him to work with you and include him in the transition process. If your interested in a good behavior specialist call Dr. Brooks Donald. Hes at the helathpartners clinic on 25th ave in Mlps. Good luck.
B.