i may have found a solution. well, the wound care nurse i saw might have. she has given me something called mepilex border. unlike your regular dressings, this one uses silicone as an adhesive. i did a test patch last night and after a few hours there was no reaction so this morning i have put one over my port. no reaction so far. only downside is that there is a foam pad in the middle making it a bit bulky and it isnt transparent. but, since it is restickable, if you want to inspect the port you can just peel it back and stick it down again. this doesnt hurt when you remove it either.