My boyfriend has a rash that started on the chest and now is on his lower abdomen, back, arms and spreading down his leg. It itches and is very red. His wrist has also started swelling. He’s at the ER now but I dont know what it could be! He just bought a new shirt today and didn’t wash it before wearing it. My friends say he could be having an allergic reaction to the chemicals on the shirt but I dont know!