Skin flare up and then gone after 30minutes? Stress or what ?

So in the last couple of weeks I keep getting this, hives but they are gone within 30 minutes. I started taking Piriteze and it seems to go away only return 48 hours after skipping. I've had A LOT of stress lately, I feel like I'm going crazy. Did anyone else have experience with this ?

So in the last couple of weeks I keep getting this, hives but they are gone within 30 minutes. I started taking Piriteze and it seems to go away only return 48 hours after skipping. I've had A LOT of stress lately, I feel like I'm going crazy. Did anyone else have experience with this ?