Talk to Dermatologist on Perineum Itch And Burning

too much on the area between anus and scortum (perineum). At first when itching starts,it feels powder on the hand, and when the cindition gets worse, then the sldry skin starts to came off amd then i feel some watery skin comes out it would have been more irritating and burning plzz give me solution what should i have to do now *no medical history