Itchy labia and NO ANSWER

Okay so I am so tired of trying to find out what this issue is and the doctors haven’t helped much at all. My labia (the outer lips) is SUPER dry and itchy. The the point where it’s dry, itchy and sore. Then gets flakey. I have normal discharge and I am negative for BV and thrush. Sometimes the itching gets bad the skin peels. And this also has resulted in me loosing about 85% of my Pubic hair (where it itches) I don’t shave, I do not remove the hair with anything except I lightly trim so it doesn’t affect my skin. My hygiene is impeccable and I have a dairy free diet. I also use nothing scented and wash with pain water. AND i use o my hypoallergenic detergent. Also negative for STIs

Can you see why I feel like im going crazy?

Any advice I appreciate it