My Wife, had Fentanyl patches for pain relief, they didn’t usually stick to her arm very well, we had to use a microphone tape to hold them on. The main problem was showering, the idea we came up with was using cling film, I cut a roll in half, so it was more manageable, and wrapped a couple of layers around her arm, worked perfectly, just thought I’d pass that on, in case it helps anyone else
