I"m not too sure what is causing the blowouts. I do soemtimes lay on the side that has the pouch, but not flat on it. It seems like when it's happened it's not overly full. I had one during the day the other day and I think it's because my stoma is right at my waistline where all my pants hit :(
I do sort of wonder if the scratching is breaking up the adhesive bond over a couple days. the outer part of the "fabric" wafer gets pretty ratty and pilled.
If I could figure out the itching that would be a help. I thought yeast (and it was) and I treated with diflucan which helped tremendously, but then the yeast comes back. Vicious cycle over the last few weeks!
Last time I changed it all out, i expected the skin to look terrible again, but it looked great under the wafer, so I have no idea what is causing the itch this time.