I relapsed on meth about a year ago n a few months later began to have this rash that began as blisters that were itchy but once I scratched them they became red open sores that burned n became scars its still going on I have been on 6 or more rounds of antibiotics n nothing just when I think im healing it pops up somewhere else worse then before it started on my thighs. then my upper arms them my tummy bottom n quickly spread what do I do pls help it looks like a final rash now lil crystal like thingys are coming out of my neck n skin