Embarrassing...Entire Undercarriage and Anus on Fire with Eczema-like Symptoms

Trying to decide if my symptoms are hormone related or something autoimmune...I've been to countless doctors (Obgyn, dermatologists, general practitioner) since 2019 with INTENSE vulvar and anal itching. Like I want to cry it's so awful. We've basically ruled out fungal issues because fungicides never clear it up. Immune suppressing creams seem to help some. My biggest tell is that it seems to come and go with my cycles - it's always there, but it's definitely a thousand times worse during my luteal phase. I'm in agony during that time. And the water from my shower or a bath makes it burn!

I've also had psoriasis/eczema-like issues with itching and scaling on my eyelids, behind ears and on my scalp for nearly 10 years and no one can figure that out, either. It also seems to go along with my cycles. But when my undercarriage is on fire, my eyes are clearing up around that time.

No idea what to do.