Are excess scar tissue growth formed as a callous by the body to protect the piercing from uncomfortable friction. Piercees with more skin pigment may be at a slightly higher risk of developing keloids, but if the piercing is well cared for, the risk will diminish. These bumps are more common with nipple, ear cartilage, navel, oral, and some genital piercings. They can be difficult to get rid of, so it's best to avoid circumstances that encourage keloid development.
Keloids Are Usually Caused By:
Tight, restrictive, or rough clothing that rubs against the piercing.
Inappropriate jewellery thickness, diameter, or style.
Poor placement of the piercing ( too deep, too shallow, or crooked.)