Itchy bum and on the skin around vagina!

Hello, I've been having itchy bum (mostly near the top or just above anus) and eventually I got an itch around the vagina as well (around the clitoris as well) since a few months now. The level of itchiness varies.. sometimes its really unbearable and I scratch it a lot. And if I scratch whenever it itches, i feel relieved but the part where I just scratched gets inflammed! If I put water on that inflammed part, it will pain like hell. I went few days without scratching at all but it comes back and I couldn't do anything but scratch. I think sometimes the scratched part bleeds a little and it heals on its own too. It forms a layer of skin on its own.. although that layer can be easily peeled off and resembles the scaly dandruff that forms on a dry scalp on top of head. And after that dry skin comes off, the itchy feeling starts again, i scratch, it heals, and the cycle just keeps going. I apply pure virgin coconut oil to get relief but I'm looking for a permanent solution!