I Had Got Red Pimples Like Over The Arms,hands,shoulders And

I had got red pimples like over the arms,hands,shoulders and neck and getting itchy at sometimes and spreading slowly on thighs and legs. I got these on 7th.I already consulted the doctor on 8th but he told to wait for tomorrow to see the improved pimples and told that seeing after those I will make decision in mean while he gave me a dermadew lotion and some tablets