My 88 year old mother will start radiation in one week and have 15 treatments over 3 weeks. She is legally blind, almost deaf even with hearing aids, and is experiencing cognitive decline over the last couple of months. I am trying to get ready to treat her side affects. Will she have side affects immediately? Aquaphor and sitz baths were suggested at the radiology consultation. Can she use lidocaine on the treated area? Are there any suggestions for the sitz bath ingredients? Any other warnings or suggestions?