Almost 3 weeks ago i got 2-3 red small bumps which were fluid filled totally itchless and painless on my shoulder. Afterthat these were spreading and covers almost over the my shoulder. I used clobetasol cream over it but they could not stopped and covered another shoulder, back trunk,post arms,buttucks. Some bumps are now growing as filled with yellow white fluid and surrounding is swallon red. kindly diagnose me what is this and how i can stop this condition.