Can stress cause hive like spots all over your body and what can help the stress?

Hives: Yes! hives and stress are synonymous. Multiple other causes but the easiest thing to do is figure out a way to cope with the stress...Although this often does not settle the hives. Consider adding an over the counter non-sedating antihistamine once to twice daily to help better control the hives. If still there in 2-4 weeks, see an allergist.

Yes: What , s the reason you are stressed ? Do yoga, be positive , take zyrtec (cetirizine) for itching and if it does not help see an allergist.