Stress and marriage issues

If stress causes a rash for you, then it might be mast cell activation syndrome. For this, you can take antihistamines, curcumin, quercetin, etc., eat a lo-histamine diet, and manage the histamine triggers you can control (allergens, heat, exertion, etc.).

Otherwise perhaps neem cream or a small dose of hydrocortisone cream? Comfrey or nettle tea compress?

I'm sorry to hear that you're dealing with a stressful situation! I hope it resolves soon.

To add one more idea to the good suggestions above:

Topical Benadryl to calm down the skin irritation and itching fast.

Just in case, it might be good to compare the rash to pictures of Shingles rashes, to rule it out.