Hey @rad62
I had that side effect during my salvage radiation to a small extent. I also got the occasional bout of diarrhea. Once the radiation was done with, I went back to normal pretty quickly.

@q95oldies , Salvage radiation, is similar to initial radiation treatment but it's done after RP if there's still some cancer suspected. i.e. your PSA goes up and / or there's some seen on a scan after surgery. I think it's typically done at a lower dosage as compared to radiation for initial treatment.