[Norman]

If you've ever watched the other episodes of House, he's the same way with anyone and any condition. Nasty, rude, uncaring perhaps, but that's who House is. That's how he gets to the bottom of the truth. That's what makes the show.
That episode DID show the father of the "girl" who also had sexual relations with her. This was ok? The girl never had a period, but this was never told to House along with other things that were important.
He used his nastiness to get the most out of his patient, as he does with all the others and in all the other episodes because they just basically lie.
He got annoyed because he found the girl to have gonads of which no one seemed to ever know about. So with the lies they handed him already, he was totally angry when he found the gonads and spewed out the man comment to the girl because he thought she knew.

You have to look at the whole picture....and not just pick things out of it.