Itching in scrotum and nearby area.

There is serious itching in my scrotum and groin. One month back suddenly itching started out of nowhere. I thought of it to be general itching and applied Soframycin Cream on the affected area for a few days but it didn't get any better. Then I started using Candid dusting powder and it provided much relief. I use it twice a day. But the itching even tough subsides when I apply candid powder it refuses to get cured absolutely. It's been a month. The itching get more during the night. The affected area remains the same, so it's not spreading but also isn't getting totally cured. Please suggest some cream or meds. Earlier I thought of it to be a bacterial infection but now it seems like it's fungal. Even if a fungal one it should have gone away by using Candid powder as its a anti fungal powder. I'm clueless.