I can't remember where I read this (maybe Catherine Watson Genna's  
book?) but sometimes, this tendency to clamp down while nursing is  
related to another issue, one of muscle hypertonia.  I also remember  
reading (perhaps in the same place?  I wish I could find it now but  
maybe someone else has it?) that it is a normal response for babies to  
bite down when something touches their lower gum, so perhaps the  
tongue position on this baby isn't ideal but somehow he's done well  
enough to gain and breastfeed "successfully" (though my heart goes out  
to this woman who is probably in a lot of pain!).

I hope this helps,
Diana in NY
Diana Cassar-Uhl, LLLL, IBCLC

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