The two big triggers for me are mold and my gut. I have a messed up gut/digestion and when my gut is bad my skin flares up badly.
Mold is a big trigger for me. In fact it is the original trigger that started off my eczema.
I stayed in a moldy house for 2 weeks and after 1 week I developed a rash all over my body that looked like ringworm and I also became extremely sensitive to mold (headaches, lightheaded, itchy, feeling like I’m being poisoned and eye & sinus problems).
I did not have skin issues or any noticeable sensitivity to mold prior to this. I had skin biopsies taken at the time of the rash and was diagnosed with eczema. I have had problems ever since for many many years.
Stress can make flare ups worse.