19 month old with Eczema/food allergies-help find remedy!

My son Nolan is 19 months old in a week. He has eczema on the backs of legs, mostly from a little above the knee down, also on the tops of feet, starting to get some on his upper inner thighs, along his back and just a touch now and then on his forearms. It gets worse in the heat and from many different foods. It's very itchy to him. He appears to be allergic to many many foods where when he eats them his eczema flares up vivid red. These foods include: all dairy, all citrus, eggs (possibly), cherries, strawberries, apricot, possibly lentils, cinnamon, tomatoes, chiles, eggplant, kiwi, and the list keeps growing.

I tried to have a homebirth but finally had to go the hospital- I labored for a very long 107 hours before he was born- he seemed to be pointed towards a corner of my pelvis and he finally changed position after I had an epidural to reduce my contractions- they were so strong and forceful and lasted so long that it seemed he couldn't move into position- he had a very bad bruise on the back of his head when he came out. His head is big and continues to be in the 90th percentile.

He has a very happy disposition, inquisitive. He is fairly demanding of my attention in that I stay home with him and he hasn't learned to occupy himself much yet and constantly wants to be in my lap while I'm on the computer, or wants me to hold him or that I at least be near him while he's playing- he gets a little upset when I start reading or seem distracted in some way. He is very outgoing- since birth he has always gone to everyone who wanted to hold him, and he continues to love meeting new people and interacting with them and smiles easily. While he wants/likes a lot of attention, he is also pretty independent and wants to walk around by himself and doesn't want to hold our hand, he doesn't like being restrained- he often kicks his bedcovers off his feet. He seems fairly bright as he says well over 200 words- could even be 300- he loves to dance and he loves music and singing- he loves to sing songs with us and has a very good ear for singing in tune. He's a very distracted eater and can't focus on eating when there are people around or anything else interesting to look at or do. He'll never fall asleep in a group setting no matter how tired he is or what time it is- his energy seems to feed off others and he gets very full of energy around people even if he's tired (just like me his mother). He responds fairly well to discipline, he gets over discipline very quickly and is back to his perky self right away. The only exception to this is not discipline, but once he fell off a chair about 4 months ago and split the bottom of his chin open and he cried and was inconsolable for quite awhile and was afraid to sit on that chair thereafter for quite some time- now he is fine with sitting there again. He seems to have a very good memory. Probably the biggest negative aspect to his personality is that he demands a lot attention to be on him or with him, and the biggest positive side to his personality is his outgoing/friendly/happy nature. He readily shares (for now!) even though he is not around other children his age hardly at all and hasn't had much practice in sharing. He seems to feel more content and satisfied if he is given a 'job' where he feels like he's doing something important and needed and grown up- when I ask him to help me carry out the garbage and I give him a smaller one he does it with much seriousness. He responds well to our asking him to do things that are grown up. He loves tools and likes to pretend to hammer and saw with our tools- he doesn't play with toys much at all- he just likes adult things. He loves to be scared and surprised- he loves all those games where you jump out at him unexpectedly and he'll laugh hysterically over and over. He totally gets humor and laughs very easily. He is very cuddly- especially when he wants your attention. He nursed for a full 14 months, and it is around that time that he started sleeping through the night as well. Everyone young and old seems to enjoy being with our son and there are 6 and 8 year old boys who hang out with him like he's their age because he's fun and 'cool'- and he's only 19 months old! Everytime I tell him to 'come here' whether it's to change his diaper or to get in the car, he immediately treats it like a game and gives me a mischievious smile and wants to play a chasing game- he's not trying to be bratty just wanting to play a game. He's not always the best listener- when I tell him not to do something he'll often try to ignore it for as long as he can until the threat of a stronger punishment. Other times he responds right away, but still takes his time in actually carrying out the request (like 'come here'- he'll walk very slowly towards me). He's a very messy child- just like his father- and tends to throw things everywhere- but when I ask him to pick things up and put them away he readily does so and is glad to do an 'adult job.' He likes to play with his food and do things like stir a spoon in a cup of water and then add pieces of his apple to the cup and stir some more- stuff like that. He doesn't sleep well if he's with me or my husband- he seems to get too wired when people are around and keeps fidgeting around for quite a long time before he'll fall asleep. He just seems like he's always ready to play a game and laugh at any moment. He is often very grumpy afterwards if he has a late afternoon nap and it takes quite awhile to get him to stop crying and complaining- however when he wakes up in the morning he is very cheerful and happy. He absolutely loves Bananas and Blueberries. He likes warm foods in general when it comes to actual meals- he won't eat most cold foods except for something like a smoothie. He seems to get frustrated rather easily when he is unable to do something that is currently beyond his ability and will start to cry/complain- for instance he'll throw his pen down and shake his body and head around if he can't draw what he was trying to. If I discipline him by putting him in his room with the door closed he will cry just for a little bit but then he'll give up and start looking at books or whatever- he doesn't seem to fight back too hard over things in general- especially if you're not there- he's more persistent if you're in view.
He doesn't seem shy at all- he'll walk right up to any kid or adult he doesn't know and try to interact even though he is just learning to talk- even if the kids are older he doesn't seem intimidated at all. He always seems to become the person people want to follow or go along with. He has never watched television. Overall his behavior is fine but his eczema has been getting worse lately even though I am taking more and more foods out- I am starting to be at a loss of what to do. The weather here is warming up. We hardly bathe him at all. Recently I put a simple ointment on his legs that happened to contain arnica and I don't know if it was a fluke but it really seemed to improve his skin temporarily.
He is NOT immunized at all. He has only had a fever 2xs- both minor. He had teeth very early- 2 teeth at 3 months, and 9 teeth by 10 months. He currently has probably 90% of his baby teeth fully grown in.

His skin where the eczema is is very dry and almost scaly feeling- there is NO pus or oozing or even cracking- just very red, very dry, scaly, itchy, and when it's been worse lately, little tiny hard round bumps too.

I don't know if this will help but I, his mother, have an autoimmune thyroid disease called Hashimotos- my immune system seems very overreactive and I wonder if he inherited some of this with his strong reaction to so many foods. His father/my husband had eczema and many food allergies as a baby/young boy as well including many of the same foods my son is allergic to- his eczema later turned into asthma and then depression which he has dealt with on and off for years- my husband feels best when he is very busy doing active projects outside and my son loves this as well. If my husband sits around too much or 'relaxes' he gets depressed. My husband was very shy as a boy though and my son definitely is the opposite in that respect. I apparently had eczema as a baby too and I've always been pretty outgoing. At the time my mom said switching to a soap laundry cleaner eliminated my eczema completely. I've tried that with my son and haven't noticed a difference yet- in fact it seems to be worse- but perhaps it's too soon to tell.
Please help me- if you have any questions I can answer I will do so right away. Thank you!