Hi, the dr just put this on a couple of weeks ago and I have to say while I thought nothing of it I also seem to have a very dark red rash surrounding and under the circle part. It is making me concerned. I never thought that this thing would cause any kind of irritation or 'infection' and to be honest I have started to get some sort of infection that a dr prescribed antibiotics for. So after today I'm just gonna tell the dr no thanks and take it off and ask her about this and why it happened. Thanks everybody for talking about this.