Has anyone experienced iron staining after IV iron infusion?

I have a huge stain on my arm after an IV iron infusion and I believe it was due to medical negligence. If you've experienced the same how long did it take for the stain to fade? I was reading online it can take 3-6 months or even 12 months, in some cases is permanent.

I'm starting to consider suing the Nurse that administered the treatment.

Has anyone experienced iron staining after IV iron infusion?
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