For the mom with recurrent stabbing, burning pain and nipple blisters, this sounds like thrush to me. I have worked with similar recurrent problems and at this point focus on 3 things-1. secondary involvement of excema or bacterial infection, possibly with a referral to a dermatologist, 2. hand washing after hand/mouth, mouth/breast/, hand/bottom contact, etc. this seems to help break the cycle. 3. look for the source of the yeast- common culprits have been bras, towels, bathing suits, nightgowns, sheets, rubber nipples, pacifiers, nursing pads, cloth diapers, baby toys, car seat straps that baby gnaws on etc. In many cases we have tracked down the source and eliminated it and things have cleared up. Some moms have needed oral as well as topical medication and wiping baby's mouth with a little nystatin after every feeding has been helpful to others. I have also seen some other non-thrush fungal infections that have been tenacious. Good luck. Cathy