Is this itchy breast thing normal? Is it a sign they are going bad or that my body is rejecting them?

I have a 10yr old breast implant on the left and the right side was replaced 5yrs ago due to deflation after car accident. My left breast especially the nipple and side of the breast has become more and more insainly itchy the last several months. To the point of tears! The right side nipple and side of the breast itch also, just not as bad. The right side hurts and you can feel and see the implant through the skin. Is the itchiness a sign they are being rejected by my body?

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