I am 46 years old with DCIS. Had lumpectomy twice with 2 moths to get claen margin. 20 days after the second lumpectomy when i was getting ready for radiation I got rash over lumpectomy area where it is itches specially under my nipple. My doctor says it is not infection and it is skin reaction to the surgery But to be safe I am taking antipiotics but it doesn't help. What is this?