My Husband Has A Rash Of Red Spots Over His

my husband has a rash of red spots over his body and speading. red spots turning into what looks like a pimple and gets scaling and spreading to arms, back, legs, head, fingers and on his penis looks like a boil it started on his leg he thought it was ring worm. now its growing bigger bigger. now we think it could be herpes. i have herpes and i take medicine.