I don't know if you have checked into Inflammatory Breast Cancer at all. I am going through the same thing with other symptoms. Most will say its a bug bite or a rash. Keep a close eye on it and make sure there is no inflammation. I can barely swallow right now due to the inflammation in my lymph nodes. I am going back to see my doctor tomorrow. Good Luck and just get it checked out don't play around with it. It could be nothing it could be ibc.
Keep me posted
It sounds more like some type of skin irritation but I suggest that you see your Dr. for an examination and diagnosis. I'm sure there is some treatment available for the problem that you describe. Regards ....