Hi,
I really sympathize with you. My son had horrible eczema when he was a baby. I don't know if this would work for you, but here is what finally worked for us:
I heard somewhere that tar was good for eczema. Tar is often found in dandruff shampoos, so that's what I got to wash the area with. I forget what brand it was because it was so many years ago (maybe Selsun Blue? Do they even make that anymore?), but just be sure to look for tar on the label.
Also, the cortisone cream our doctor prescribed wasn't helping, so I asked for a cortisone ointment. This worked better. I don't know if you can get this over the counter. You probably need a prescription.
Finally, I recently had a bout of very dry skin which I suspect was actually eczema. I used a really cheap lotion that I got at Walmart called "Lander's Extra Dry Skin Treatment," because I really don't like putting too much cortisone on my skin (The long term effects can be harmful). It contains a small amount of a mild cortisone (dimethicone) and mineral oil. It worked wonders overnight!!!
Hope this helps!
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Cheryl