For a few weeks now whenever i am stressed, upset and even after i finish work i break out in these little bumps that are so GOD DAMN ITCHY!!!! arghhh I'm not sure if they are hives and if they are why are they happening when i've never had them before?

I have been under some stress today and have been really moody/emotional so have them ALL over my chest, my back and some on my arms. I get them all over my legs when i sit down after working...

they cant be an allergic reaction as i havent eaten anything different and im not using anything different... same deoderant, washing powder, body wash, shampoo.... etc..