Your body has no idea that you WANTED to put a piece of metal in your skin. It thinks you've been wounded and it knows that infection may set in if the object stays in (because foreign objects have dirt/bacteria on them). The body knows it needs to get the object out as soon as possible so it does everything it can.
This means the flesh surrounding the piercing will actually sacrifice itself for your life. It will actually die off and the cells will fall off of you little by little. This causes deep scars usually. You can actually visually see the skin thinning when you look at the piercing.
Rejection usually only happens to surface piercings--eyebrows, bellyrings, hips, corset piercing, cleavage, nape, etc.
Rejection will ALWAYS happen with these piercings no matter what. The only way to reduce the scarring from rejection is to take the piercing out early. Some bodies reject quicker than others--some people can go weeks with an eyebrow piercing before it starts to reject and some people can go months before it begins rejecting. It will always happen though.
The only thing you can do is try to slow down the rejection process. This means rinsing the jewelry off with saline solution twice a day and doing everything you can not to put pressure on the bar. With surface piercings, the more you mess with them, the quicker they will come out.
The skin usually begins to be itchy because the cells are dying off so you can live and won't get a major infection. Again, the body doesn't know that the object has been sterilized and was wanted so there honestly is no way to stop rejection.
I also want to note that if your piercing begins to reject and you do not remove the jewelery, it WILL still come out. Your skin seriously just falls off of you little by little until the piercing comes out as well.
Here is an excellent photo sequence in which someone shows how their nape piercing rejected after a few months:
You can see the scarring that is going to be there and how the flesh gets smaller and smaller around the piercing until the bar isn't able to stay in the flesh any longer.
Here are some photos of surface piercings that are rejecting (or have rejected and left some scarring):
I had a surface piercing a few years back. The scar is pretty deep and it really does itch periodically for no reason. Mine started to reject a few weeks after I had it pierced and by a few months it was driving me crazy with itchiness.
I tried to explain what rejection is but if I have been unclear then please let me know what I'm missing or what needs to be further explained so I can help you out. [ Peeps's advice column | Ask Peeps A Question ]
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