Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. According to your symptoms the possibilities are : Mastitis, breast infection leading to redness of the skin, edema and dark spots. Any local injury or skin allergy leading to this type of reactions. Rarely some type of breast cancers like inflammatory breast cancer can manifest with Peau d orange appearance. So, if the symptoms are persisting better to consult either gynecologist or General Surgeon once, get examined, if needed please go for sonomammography and take treatment accordingly. Hope I have answered your query. Let me know if I can assist you further.