rash on breast

hi there hope someone can shed light .i am 28 married mum have had an anular erythema on left breast for 7 month .i have been to see a dermotologist who did a scarping and found nothing for infections etc, this was in feb i went to see them for results on june 27th and they want to do a biopsy of the area. the rash has started to fade, as at one point it coverd the whole breast and now  it is just underneath but has left slight marking of the skin.
i have some pain in my breast and arm in slight sorness of the area but nothing to complain about.

[Cleveland Clinic]

Dear sonandsteve,   The skin on the breast like skin in other parts of the body is susceptible to a variety of skin problems.  It is difficult to advise, it seems you are doing the correct thing by having this followed up by the dermatologist.