I think hair loss is actually the result of chemotherapy and radiation treatment rather than the actual cancer. Either way, it was incredibly inappropriate and cruel of the other boy to say and do those things. It sounds like he was trying to be as deliberately cruel as he could. All I can say is he must feel pretty rotten about himself deep down to resort to that kind of thing. I know it must have been an upsetting situation all around. I'm sorry that it happened. People can be so very cruel.