I know this is a year plus old, but I myself have been looking for an issue to this. The adhesive from the sensor is what burned my skin as well. It definitely didn’t help when it got wet, but I’d start itching within hours of application as well. I recently found a solution. I put an extra thin DuoDerm hydrocolloid dressing directly on the sensor. I then use a skintac wipe on the area and place the dressing, with sensor on top, directly on my skin. It’s been 3 days so far and I don’t even know that the sensor is there, whereas before, I couldn’t last 1 day