My Wife Has Multiple Places On Her Breast And Abdomen

My wife has multiple places on her breast and abdomen that are perfect circles of various sizes. They vary in color from pink, to red to reddish brown almost like tanned skin. There are no raised bumps, the only ones that itch are one on top of left breast. She has had these come up since last fall. She has had one on her belt line for 20 years. That one on the belt line was checked years ago by a dermatologist and he had a biopsy done. He told her that it would be all right unless it attached itself to an organ or something else.. Another dermatologist checked her last June but don't recall what she said. Like I said, there have been several come up on the stomach area and one under the breast since last fall. I wish I could send a picture for you to really see what I'm talking about.