I switched to cotton pads (Bravado...I really like them!) and the itching is getting better. It is only on the parts of my breast the the disposable pads were touching, but not my nipples. I have been putting petroleum on them too, and that is helping. If it is an allergy, you'd think that my nipples would be affected too. I'm not convinced that it is not thrush. Baby sometimes pulls off and on the breast, but usually if she needs a burp.