I used to be really sensitive, but somehow a high dose of Lamictal managed to get rid of all that. (I'm not saying you should take Lamictal; I'm just saying it magically worked for me.) However, I do know what you mean about being overly sensitive.

I do think it's a BP thing, although BPD probably compounds the problem.

So, I'm just adding another +1 to what everyone else said.