Fun fact: metal retainers do contain nickel even though they say it’s minimal. If you’re allergic, get plastic removable retainers and don’t make this mistake. I have had this in for 20 years and the reaction gradually intensified until I couldn’t take it anymore. The first time it flared this bad is when I was suffering from mold illness. We thought it was thrush initially even though it didn’t scrape off the way thrush does. I even had it biopsied and it came back as geographic tongue. I think

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