Hi,
I really feel you so I'm going to write out exactly what I'm doing to treat my eczema. It's a plan that has been created by my dermatologist for when my eczema initially flared. Albeit at the moment. it's not working and we are having to go to the next options.
Ditch the perfumes, fragranced products and most creams from Boots, Superdrug etc.
They aren't good for your skin, don't hydrate it and often damage the layers beneath your skin. Use an emollient which is thick, and apply that often. 2-3 times a day at most. I use Epaderm Ointment which is a vaseline-like cream made from Parrafin Wax and other chemicals which really helps. For washing my body, I use Epaderm as well, the same ointment, I also occasionally use Doublebase Gel which is just slathered on my body prior to entering the shower.
Take your vitamins.
Autoimmune illnesses are really affected by your diet, see what triggers you, if anything has changed drastically in the last few months and try to revert it. Most importantly, I found taking Vitamin D and Iron supplements to really help.
You need drugs... unfortunately.
Unfortunately, if how you're describing it is accurate, you're going to need some sort of intervention with medicine. As many others have suggested, visiting a GP is a good idea. They'll most likely give you a steroid cream, now listen to me when I say this. Use steroid cream thinly and sparingly. Depending on the potency of the cream, it can really rip through your skin and make it exceptionally thin. You can also (rarely) face side effects such as withdrawal, but you shouldn't necessarily worry about this as its not very common.
I'm currently on Elocon (specialist only), and recently had a one week course of Dermovate (very very potent steroid, only issued by specialists). Your GP will most likely prescribe something like Hydrocortisone 1% to be used thinly, however, I'd advise against using this on your face, as it's quite a sensitive area.
Take it easy
Autoimmune illnesses, like eczema, are triggered by environmental changes. If you are stressing about it, it won't help at all. Try to get enough sleep, if possible, and make sure dosed up on antihistamines (it really helps).
All the best to you!