Hi MissKat,
heavy metal poisoning
https://www.westonaprice.org/health-topics/dentistry/root-canal-dangers/
http://articles.mercola.com/sites/articles/archive/2014/07/29/dangers-amalgam-fillings.aspx
Vit D3 is best gotten by laying in the sun with as much skin exposed as possible
Organic fresh foods diet is best for health. Better than supplements.
Most doctors [not all] just want to push Pharma's drugs because they are paid to. Very seldom do they want to get to the real cause. My opinion unless they are a biological dr. forget them.
Wheat was flagged as a allergy. Many people are sensitive to it in different degrees. Celiac is the worst.
I am sensitive to it, and it causes joint pain, as well as nerve pain with me.
Only buy Gluten free Organic products. The rest can be loaded with pesticides.
http://www.healthline.com/health/psoriatic-arthritis/gluten#Overview1
The Psoriasis problem is best handled by Colloidal Silver which kills about 650 pathogens, bacteria, or viruses.
https://www.amazon.com/American-Biotech-Labs-Silver-
I have used this one, and it works. I did find another I will try next time that sounded good to me.
https://simplysilver.co.nz/shopping/pgm-more_information.php?id=4
What I have suggested here will in my opinion be better than what you have spent a lot of money with no results.
Wish I could help with the money, but I can't.
Hope your hubby gets better, and if he does with these sugestions give feedback as others might have same, or similar problems.
IC
I am sorry if my post was not clear, but he was not reactive to wheat.
Your post was clear. some doctors don't buy into the gluten problem at all. Natural news posted an article that suggested the problem is the pesticides they spray on wheat crops before harvest. Just avoid it for 30/60 days to see if it makes a difference. It did with me.
You didn't mention the heavy metal problem. That's also real. It can wreck havoc on your health. I can verify.
If you have the type of teeth I mentioned that have mercury, they produce vapors that you inhale.
Colloidal Silver must be applied constantly. It's not a one time application. Those toxins hide in the tissues of your body. you could be doing good at the skin, but there's alot more that will take it's place.
What's happening to him isn't normal so if not what I mentioned maybe his job his environment.