i was 1st prescribed morphine patches about 6 months ago & all was well untill 1 day where my patch was i started feeling a burning sensation & i removed my patch & where the gel part of the patch had been it was a bright red mark on my skin so i moved my patch to another part of my body & the same happened again.....these marks are like burn marks & become very sore they have scabbed over now but what is this?