My mum has stage 4 lung cancer, which has spread to her pleura. She is now experiencing severe pain in her shoulder and back, her consultant thinks the cancer is pressing on nerves hence the pain. She has been prescribed slow release morphine tablets and is about to start 14 sessions of palliative radiotherapy soon. My question is, how bad will the side effects be, she is quite weak as it is and I wasn't able to attend her last oncology apportionment with my parents and I don't think they took in what the consultant was telling them. I basically just want to have an idea what she could possibly face from side effects so that I am prepared. My dad bless him, tends to bury his head in the sand which isn't the most helpful.