I have never had any hair loss issues, but I have been maliciously made fun of for plenty of other things. So I know the feeling....not letting it get to you is much easier said than done though sometimes I don't like the word let because its not as though people willingly open themselves up to being hurt of course I know that is not what is meant by the term. Anyways sorry you have to deal with those insensitive jerks.

Sometimes though, not saying its the case here...but sometimes people might not mean anything mean by their comments and might just be trying to be funny, but the sort of humour where you laugh at each others flaws is more of something between close friends where both parties know its a joke and they aren't actually judging.