Itchy skin after completing radiation therapy?

That itchiness is healing, you know how when you get a burn and it starts to heal. I used OTC cortisone with aloe Vera when I had to be dressed and working. When I was home for the day I just kept the aloe going. I remember at the time, every day felt like an eternity. Now that much time has passed, it feels like it was a blip in time, I only remembered it when I read your post.
If you are concerned about using cortisone, I bet you could call the radiation center and ask if it would be safe since you are 7 weeks out.
Are you using any other skin moisturizers? Does it help?

Thanks for the encouragement. I am using moisturizers, but I will go back to the aloe as well. I will ask the radiation center nurse about cortisone. They told me to keep using moisturizers for a year, so I have been putting them on twice daily.

During radiation, I developed a rash on my back. I was told that it was caused by the radiaion exiting my body. The rash went away, but the itchiness remains. I use Vanicream daily after my shower and feel so much better. Good luck

I found that ice packs helped me. I am talking about those soft "frozen peas" you can get at a pharmacy. One side is "lined" with fabric. That's the side you should put against your skin. I would put it in my bra. My radiation oncologist got a big kick out of it, expecting me to break into the song, "Let it Go" from Frozen. There were nights when the itching was so intense that having the ice pack was the only way I got to sleep. The radiation may not be the only thing causing the itching. You may have nerves that were cut during the surgery that are healing. They say nerves are very slow in healing.

I should have commented. After trying Benadryl, and even cortisone lotion, I used ice packs, those kind with the "frozen peas". I would either stick it in the pocket of my mastectomy bra or just put it against my skin. My radiation oncologist burst out laughing. I asked, "Do you want me to sing a heart rendering version of "Let it go"(from Frozen)? He nodded, still laughing. The ice packs often were the only thing that helped and allowed me to sleep. These packs will slowly warm up with your body heat. Obviously don't use ice directly on your skin.