Spots underneath breasts

I continue to get dark/discolored spots underneath my breasts.  It looks as though i have a reash of some sort - sometimes itch/burn, not too often - irritation is red at the beginning and turn dark brown within days - goes away and comes back.  Do you have any idea as to what this could be?  

[Cleveland Clinic]

Dear JacquelineO, The skin on the breast is like skin anywhere on the body and is subject to a variety of conditions.  If you are concerned you should have your doctor or a dermatologist examine you.