My oncologist said the effects of radiotherapy on breast tissue can go on and make changes for years and years...I'm still actively flaking 10 months after radio and even through a layer of fabric the skin can't tolerate a prosthesis for long enough to wear through a working day...
Having the same problem, I am determined to discover what the cause is. I am three years and two and a half years post op and its driving me crazy.
I will post if I get an answer (or solution).
P.s Just been googling, Apparently could be circulation. Ice pack or massage seems to help other people. Exercise might be key.
Sorry I just read your note, just like to say I get it all the time but sorry cant help you as I dont know whyas well. I could only think its the tissues.
Do let me know if you find out before me as I will ask my surgeon when I see him next.
I'm sorry you haven't had any replies to your post yet. It might help to give our Helpline a call to talk this over. The opening times are 9-5 on weekdays and 10-2 on Saturdays. The number is 0808 800 6000
Very best wishes