Two-three months after radiation ended (Nov 2024) my breast started itching--and I had a rash--i.e. spots of reddened skin. Before that skin on breast was extremely dry, but not itching and no rash. I will see radiologist for follow-up mid-Feb 2025. Luckily for me, I had only a couple of days of extreme fatigue.
BTW, I think it's really helpful when others share their outcomes--good or bad. Sadly, perhaps because they are protective, doctors seem to underplay side-effects. Sadly, also, that policy causes more worry than good. Knowledge is power!