Along with eczema on my face and body, I get genital eczema unless I'm very careful what I wash with. I can't use any soaps or shower creams etc - I use Aproderm emollient cream . Using that, I can keep things normal. Without it, the eczema come rushing back and I have to go to the doc for prescription cream. I daresay the other emollient creams would be fine as well, but I stick to what I know works.
I reached the point of desperation where I was in tears every day because I just could not stop the itching, and I'd wake up with bloodied fingernails from scratching in my sleep. The prescription sorted it out in a few days and I felt very silly for not going along earlier, but I was very shy of going to the doc in case I ended up with some youngster peering at my bits. Daft of me, but we all have our moments.