Ugh yeah, I now what you mean. Not even my IL's presence warrant not to scratch myself like an ape, if I my nips are acting up! It can be so bad at times...
Personally, I had to stop wearing a bra, as the itching was quickly turning into excruciating pain with the bra.
Otherwise, I have no remedy...I just scratch! But I was thinking about trying carmex, as it does wonders for all sorts of skin things...