question: I just noticed some re blotches on my upper arm - back of both arms - some on the chest - maybe 1/4 in diameter - some bigger - all are not the same shape most of them are oval -- they do not itch?? and seem to have a crusty feel to them - not really elevaed from the skin also.. I'm 64 and in generally good health - I take warafin for A-fib and weigh 200# - 5' 10"  - Any idea what they might be?