Every now and then I notice my arm starts itching. I look down and every time there is a raised bump or sometimes a few of them. It only lasts a short time. This has been going on for about a year or so. I cant find out what causes it. Sometimes I am in my car, or at my computer. Anyone have any ideas or have anything similar happen?
Here is a pic of my arm tonight. Just came out of nowhere. Again :(