Hi, I would like to know the symptoms of metal poisoning. I had a total knee replacement about a year ago and have been plagued with a terrible rash first close to the wound site. Next, on the backs of my hands, up my arms, and across my back. Now, whenever my skin is broken, like for a shot, the site breaks out and inflames at the site. My knee still hurts, swells, and is stiff. I sit here now typing with this terrible rash.