part of being different is dealing with the way society treats you.
being different is not easy, but i for one would much rather be different (i am) then just another drone in society.
you can live in society and not become its pawn.
its learning to live with how different you are, and dealing with the issues that come up, that is the key, mind you i am not saying you should shelter a child who is different, in fact, you should nurture them and allow them to learn how to deal with being different in any way in a society which targets the anomaly in the chain.
take me for example; i was born with clubbed foot on both legs, i have never been able to get up faster then a brisk walk and have never been able to play sports because of it. i didn't sulk and i didn't withdraw from society, i changed my perspective. Because i couldn't have fun the same way all the other kids did, i took up drawing and storytelling. i became a wrestling fan when it was hated, another thing that made people target me, but i didn't withdraw, i learned to deal with it.
If the child is different, the parents should help the child not change, and not hide, but to adapt.