Hello, I have been suffering from itching in my genitals, especially t…

Hello, I have been suffering from itching in my genitals, especially the labia, for 4 years now. I've tried everything and been treated in many ways, but nothing helps. What should I do? What is this? During all this time only one ointment helped me — TRIDOX — but after long use it stopped helping. Maybe it's from nerves, I don't even know. Please help me.