OP, I only talk from experience of my baby and my friend who had it from 4 to 45. Both him and with my baby everything has been tried, and what has helped both (baby used to bleed out of her face with skin breaking up and inflaming) was cutting out dairy completely and homeopathy. Also scratchsleeves (google them) for the baby initially, you probs can get something similar for yourself (silk mittens?)
But the homeopath needs to be a really good recommended one, and it has to be individual treatment, there is no one size fits all treatment in homeopathy. The consultation was £40, we needed two, it was negligible compared to what I had spent on creams etc by then.
If your eczema is diet based or exacerbated even without you realising it, taking antihistamines (but that could be trial and error, different help with different allergies) could help (NOT a long term solution! but to provide you with some sleep). Also you could try antihistamine cream, like the ones for the stings of bees/wasps, it's sold over the counter with a picture of a bee on it, I don't remember its name. But that can't be a long term solution either. Just if taking antihistamine helps, you need to try and cut out certain food groups out of your diet and see if there is an improvement. Even if you were eating something for ages it doesn't mean you are not allergic to it, sometimes it requires a build-up in the body.
Where in the country you are, if it was within travelling distance for you I could give you my homeopath's details if you are interested.
All the solutions provided by dermatologists concentrating on just treating the skin are about managing (barely or inefficiently usually), rather than healing. I don't know anyone with eczema who doesn''t feel failed by conventional medicine, let alone GPs, their only solution is steroid creams.
I feel really sorry for you, I nearly lost my mind with a baby who spent night after night trying to scratch her face/under her knees off, she was so miserable and looked horrendous, I was infinitely exhausted because I couldn't sleep at all with her constantly scratching and it went on for months! We only needed to cut out dairy for about nine months in the end, then very gradually re-introduced it, all she gets now is rough skin on her cheeks as a reaction. She is also allergic to all nuts though, but it's much easier to avoid in a toddler's diet.