Ann,
In my limited experience, vasopasms ---ie, Raynaud's phenomenon---- often
occur after nursing rather than because of nursing, and the blanching
will come and go for no seemingly obvious reason. From what you are
describing, the blanching has a very discernible cause, most likely from
what baby is doing in his mouth while nursing. A latch can look good and
a baby can still traumatize a nipple with unusually strong tongue
compression, etc. Have you checked the baby's suck out digitally?
Sometimes you can pick this up in this manner. Also, I consider the
blistering and other trauma to the nipple to be a dead give away that
something mechanical is happening. Hope this helps!
-Lisa

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Lisa A. Marasco, IBCLC                                /  [log in to unmask]
International Board Certified Lactation Consultant    /  [log in to unmask]

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