Kimass1 Since age 50 I have dealt with and will always be dealing with 3 forms of eczema. One form I just got once the Perioral and stopped the definite triggers. You know about GD which now even my last few remaining scabs are finally breaking free even after not drinking the cilantro smoothy every day because of metal allergy testing. Now back on daily cilantro for life. My most challenging form, ACD has changed hundreds of my daily contacts in my life. Yet because of the 5 Day Extended Patch Test I know what to avoid and no longer get the rashes or require an annual Kenalog 40 shot. Kenalog is a powerful cortico-steroid which never helped with my GD or my Perioral eczema, or even helped with my ACD rashes, but it did stop the ACD issues of internal burning, stinging and taser stings I would get inside my skin for about 10 months.
You do need to get diagnosed for your form of eczema causing the rashes if you don't already know. Go to dermnetnz.org and look at all the eczema types and study the photos. It helped me diagnose my Perioral so I could help steer the doctor to treat it correctly.
Also tests aren't always correct. My GD biopsy came back negative, although I clearly had it based on my symptoms. I was told my biopsy wasn't taken during the right stage. My breakout was old and waning.
I am sure stress doesn't help any form of eczema or any other disease, but not sure it didn't cause any of my forms.