Swollen ear piercing (picture in the comments)

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I got my second lobe piercing about 10 years ago. The back of my lobes have become swollen lately. I have tried cleaning them with salt water and changing my earrings out. If I don't wear any earrings at all, they start to close up after a day or two. There's no noticeable discharge, but when I take my earrings out, sometimes there is a little bit crusty stuff over the hole. How can I fix this?