My spouse has severe OCD and radiophobia. I realize this is not exactly the most appropriate venue for our questions, but hopefully somebody can help us in the right direction. She noticed several small (3-5mm), circular petechiae in a regular pattern across a roughly 6x6in area on my left upper back, and a horizontal band of smaller spots below it. The spots do not itch or hurt, and are not raised above the surrounding skin. Her worry is that these spots are radiation burns; the size and spacing seems to match holes in a steel bench, and radioactive contamination of the steel supply is one of her fears. Is there any way to rule out radioactive contamination as the source of these spots? I'd be happy to provide any additional information that may help.