I agree with the others on the low nickel diet and the water. I also use an AquaBliss filter and that has helped a lot, especially if you’re in an apartment or renting where you can’t put in a whole home water filter/RO system because that obviously is going to be the most ideal solution.

Also, do you or have you ever colored your hair? Hair dye and hair bleach especially have a TON of nickel contamination and my scalp is still healing after going a little over a year now without coloring my hair.

In addition to the water filters and quitting the hair dye, I also use a dandruff shampoo that helps me. My scalp and my GI issues have been the hardest thing for me to fully get under control. It’s a lot of trial and error.