I had no burning, redness, or any topical side effects with the 5 day treatment course which was spread over 10 days. I did apply a heavy lotion (name??) which was formulated by a nurse to my breast each day after treatment and at night before bed. I felt some weird deep bone pain in my spine for a few days which made me a little fatigued but nothing bad. I’m on tamoxifen now and no side effects so far at 6 weeks.
Best of luck. Everyone responds a little differently so if you do have side effects be sure to tell your radiation team.