A recent issue of "Clinical Lactation" -- in addition to some other 
excellent articles, all available on-line, included a great round-up 
article by Marsha Walker on sore nipples and possible treatments, some 
of which, like LED therapy, I'd never heard of -- everyone should read it!.
http://www.clinicallactation.org/Volume/4/Issue/3

On blebs, she quoted from research by O’Hara (2012), that a microscopic 
analysis of the white plug didn't reveal bacterial or fungal organisms, 
but immune cells, suggesting an inflammatory response to nipple trauma.  
A suggested treatment was removing the bleb with a punch biopsy tool and 
a thin application of a mid-level topical steroid with an occlusive 
dressing.

Anyway, another angle.

Margaret Wills, IBCLC
Maryland

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