I would think the first step would be elimination of food entirely, via fasting - perhaps for 16 hours at first, then 24 hours, as a very simple, first order experiment.
In terms of a workable troubleshooting methodology, that would be the most efficient first step. Then you can add things back in bit by bit.
I think there's a deep human tendency to wish to solve health problems with the addition of food. Depending on the decade it's superfoods or antioxidants or purple veggies or beef broth or whatever. This is probably a delusion.
I think you can indeed affect your health with food - but only by subtraction. So save yourself years of "is it gluten or isn't it" and just see what zero calories does for you right now.
http://www.abc.net.au/science/articles/2014/02/25/3951271.ht...
When the ticks bite, they inject a small amount of blood from their previous host. If the host was a non-ape mammal, then that blood will also contain a sugar, alpha-galactose, that humans lack. Sometimes the immune system misidentifies this sugar as a foreign body and develops antibodies. Now when the bitten person eats red meat their immune system ramps up to attack the alpha-galactose, resulting in a delayed onset allergic reaction.
Having read the article, the appearance of the rash in Vietnam followed by the onset of symptoms suggests something similar make be the cause in the author's case. Her body may have developed antibodies to something food in common foods. This might explain the headaches she experienced when she ate.
(Fun fact: Rice has gluten too; but it's not a variety that people with Celiac have trouble digesting).
In what way do you mean rice has gluten? Glutinous rice is 'glutinous' in the Latin sense of the word -- it's sticky (like many plant products). It does not mean it has gliadin or glutenin.
I went on the Keto diet 3 weeks ago (just to lose some weight). A fantastic side effect is my psoriasis flare ups have started to diminish notably.
I also feel better in general, no fatigue. That can be attributable to being in better shape, but I think a lot of it is the brain fog that Meghan spoke about in her article. When your body stops attacking itself, you magically have much more energy :)
But I had to roll my own, so to speak, as everyone thinks that does not work for my condition. I get a LOT of flack for talking about it online.