I have been tested for shingles ever time and its not it... The doctor thinks i might beging skin break down in that area... because that is where the RSD is the worse.... I dont know it hurts liike HELL... I dont always want a gapping hole in my arm.... it lasts until i get anitboitics... and 2 days after they are gone... RIGHT BACK TO GAPPING HOLE... It smells disgustin... Sorry for sharing all this just have no idea what the heck this is... Thanks for all your help....