Recurring rash then pain on upper arm
I have no idea if this is just a skin problem or something else. A few months ago I developed an extremely itchy spot on my upper arm. I refrained from scratching it as much as possible to avoid irritation. It lasted about 3 days and then my arm started to hurt pretty badly. It was also warm to the touch but no longer itched. The pain lasted about 4 days and slowly worked its way down my arm those few days.
Well, about a week ago, I got a mild sunburn (next to nothing) on my upper arms/chest. The same itching occurred in the same area of my arm but nowhere else. I did not scratch it. The pain came back but this time I have a huge bruise.
Has anyone had this happen or does anyone have ANY idea what this might be?