@maldokat Welcome to Connect. I am a cervical spine fusion patient and I had concerns about immune responses to metals and had my fusion without hardware and stayed in a neck brace for 3 months. I’m sorry you are having trouble and I know rashes and pain are hard to live with. I broke my ankle and had chronic hives from the titanium hardware and eventually had that removed. Have you consulted another spine specialist? If your hardware is migrating that does not sound good. Another recommendation I could give you is to contact the Environmental Health Center Dallas. They treat allergies to survival implants. If you search for them here in Connect, there is a member posting about being treated there. Are you going to consult a spine surgeon about revision surgery?