I had blood work done a few months ago. I was having circulation issues with my legs and feet. I was diagnosed with livedo reticularis. I have to wear compression stockings now. I was tested for various autoimmune diseases, diabetes, cancer, and I had my nutrient levels check. Everything came back normal. I told the doctor about my crown and since everything came back normal, he told me to just stay away from the chemicals and maybe my scalp has developed a sensitivity to them. I will try going gluten free. That's pretty hard core! Lol maybe I should keep prepoo oil in my hair for longer than a few minutes. My scalp feels itchy and tingling in that area.