I'm just as deep in experimentation as you. In a way, both of us are forerunners in the diet-eczema link. Mainstream usually looks at nothing more than food allergens.

I'll keep this forum as a journal as well, here's what I've found in the last couple of days:

I've erased red meat from my diet along with all dairy. After about 10 days of heavy supplementation as I stated above, I've come off completely. Scalp itching and my major patch on my neck have reduced in itchiness by about 75%, and everything is clearing. I've added more organic, unwaxed green apples to my diet. The original cure I followed recommended 2-3 days of raw apples, they call it an apple detox. Upon looking back, it helped a ton. Reduced inflammation by 50%. I've become rather sceptical since going balls deep in research, but Maxamillian Bercher-Benner (creator of muesli) cured his jaundice with the same protocol. I won't be finishing that book any time soon it seems, looks like I have more experimenting to do.

I'm clearing up very well, and I expect to be 100% cleared in less than 7 days. After that I will experiment with raw fermented dairy, then red meat, independently.

If I can give you one more recommendation, do the apple detox. I hate using that word because it's tied to so much bullshit, and I don't know why or how, but it works.

2-3 days (you'll figure out by the end of the 2nd day if you should do the 3rd), of organic unwaxed apples. If they have wax on the skin, scrape it off, this stuff can be petroleum based at times. Eat as many apples, whenever you want. It takes commitment, but fuck everybody, they don't know what you're dealing with, and experimentation, I have found, has been the most important factor of this whole process. Stay tough, and moisturize with coconut oil.

Also take note: antifungals have been shown to be very effective in treating seborrheic dermatitis. Candida overgrowth in the intestines has been linked to it, and has been effectively treated with antifungals:

http://www.ncbi.nlm.nih.gov/pubmed/2533189

Not saying that you should try out antifungals, just there to prove a connection. I had very bad seborrheic dermatitis reoccur for the last few months, my recent supplementation as noted in the long post above has cleared it in less than a week, emphasis on cultured foods and the probiotic w/ fasting is needed. In the case of long term supplementation, I'm not sure how it works. It could be that once the gut is repopulated properly, supplementation can be decreased, if not ended completely. Dosages and duration are still grey areas in research. Experiment. My zinc pills come in 50 mg, starting with one a day and gradually backing off could prove useful, but again, experiment.

Hey there, name's arty, i know exactly everything you've been through and everything you're still working with.
I found this site because I'm working on a book about curing eczema. I was in a state exactly like yours, traumatizing, truly.
My cure contains a large percentage of raw foods, but unlike other cures I recommend raw animal meats as well. I understand this forum isn't too accepting of many foods, but I'm not here to start anything with anyone, I'm here to help you. I am cured from the depths of this shit condition, and I want to spread the word as much as possible. This disease eats the mind, depresses and controls. Be happy, curing is on its way.

I read your eczema is weeping. In many cases this is a sign of infection. Wash with clean water and non-allergic soap, PAT dry.
Moisturize with raw virgin coconut oil. works wonders and the Medium chain triglycerides have an antiseptic aspect to them.
Wear clean clothes as much as possible, do high intensity exercise or use a sauna if you can ( I know it can be embarrassing with your condition ) to induce sweating.
Continue your raw food approach, as usual, avoid seed oils, cereal grains, soy, gluten, sugar, processed anything. Those chocolate bars you're talking about cannot be a part of your diet anymore, simply can't. You have sugar cravings because your carb content seems to be low. Eat cooked potato, yam, or white rice once a day. You should feel the sugar cravings back off. Eat berries, fruits, vegetables, mostly raw (talkin 75% of the time). High quality meats and fish. I understand that fish in HK (which is hong kong I'm supposing) are very high in toxins. If you can find clean, fresh, imported fish, drop the bucks on it.
 
Eczema has been linked to gut dysbiosis, its crucial that you work on your immune system, the majority of it, many say, lies in your gut. This means cultured foods.
RAW, not pasteurized kim chi, sauerkraut, RAW AND FERMENTED dairy (most preferably organic) like kefir and cheese. If you're like me, your ass will tell you the difference between raw and pasteurized dairy very quickly. Eat a HUGE salad every day. I'm talkin baby greens, peppers, cucumbers, tomatoes, avocado, green onion, sauerkraut, whatever veggie you can get your hands on. Top with salt, pepper, and cold pressed olive oil. (again, no seed oils)

Fast daily, 16 hours. Eat within an 8 hour window. Daily fasting increases autophagy, which is essentially cellular clean up. We need that shit maximum. Fast 24h once per week with an enema on the morning of the day starting the fast. Example if your last meal is at 6pm sunday, enema monday morning, fast, and have dinner at 6 pm.
Environmental toxins play a huge role in this condition, fasting is crucial to your repair and killing those faggot bacteria and yeasts fucking with you.

Sleep lots, drink tons of water, MINERAL if you can. If you have to drink tap, or anything other than mineral, take a slice of lemon with it. (vit c is an antioxidant)

Supplementation is crucial. You are totally right when you say that eczema can be traced to malnutrition. Now I don't know why some are so against supplementation, but the truth remains no matter what they say: Lots of the land that our fruits and veggies are grown on is mineral poor. Paleolithic lands were very high in mineral content and the food reflected that. Modern agriculture just isn't like that anymore. So, here it is, and this is where your money is going to go. IN ORDER OF IMPORTANCE:

Zinc
Probiotic
Chlorella or any algae
Magnesium
Vit E & D
Selenium
Copper
Desiccated liver (to assist with your dietary liver efforts)
Vit B complex

DRINK A GLASS OF FRESH PRESSED CARROT JUICE DAILY. This shit is incredible at skin repair (vit A and B's)

I wish you the best. Give me your email, I'll send you a copy of my book when it is complete.
abiziaev@mail.com, send me an email with any questions if you want to do this privately. I don't charge anything. Truly, nothing in this world makes me feel better than hearing and seeing people come out of this disease. If I remember anything else I'll post again.