Well I think its the grass, cause I just went out 2 take dogs for walk and half an hour later I found big spots on my arms and legs do you think I am allergic 2 grass or my dogs?
I'm sorry I didn't add, that if it is one of these things I talked about, just rub Calimine lotion on them to stop the itch and it should go away.
You'd have to talk to an allergy or skin specialist for an allergen test to figure out which it is...as from your description, it could be either.
You were probably in or near a wooded area and rubbed up against some poison oak or a nettle bush.