Keloids are a type of raised scar. They occur wherever the skin has recovered when an injury. They can grow to be a lot of larger than the original injury that caused the scar. Anything will|which will|that may} cause a scar can cause a keloid.
This includes being burned, cut, or having severe acne. Keloids can also develop after you get a body piercing or a tattoo, or have surgery.
Keloids generally show up three months or more when your skin is injured. Some continue to grow for years.