Thanks for posting on HealthCareMagic. I have gone through the details carefully. It could be that since your child is shy and cannot be bold enough to demand inclusion into some group, bullies tend to leave him out. But it could also be that your child has some sort of developmental issues like autism. I would insist you to visit a developmental pediatrician or some hospital with child development clinic. Answering a simple questionnaire will make things clear. Generally such centres also have child psychologists who can talk to your child and try to find out the actual cause and even help him out with possible solutions. There is no cause to grow anxious. Probably it is just a simple problem but he needs to be evaluated and proper supportive environment would prove beneficial for him. Sometimes, dealing with bullies is also an issue that certain children might require support for. Hope that helps. Feel free to revert back with further queries if any.