What are keloids?
Keloids are a type of raised scar. They occur where the skin has healed after an injury. It can grow to be much larger than the original injury that caused the scar.
They are not at all common, but are more likely for people who have dark skin.
Anything that can 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, a tattoo, or have surgery. Keloids sometimes show up 3 months or more after your skin is injured. Some continue to grow for years.
Symptoms of keloids
Keloids can have the following characteristics:
- Appear and grow slowly. It can take 3 months up to a year before you see the first signs of a keloid. Then it takes weeks or months for it to grow. Sometimes, they continue to grow slowly for years.
- Begin as a raised pink, red, or purple scar. A keloid is usually a raised scar with a flat surface. The color tends to darken with time. It usually ends up being darker than the person’s skin, with the border being darker than the center.
- Feel different than the surrounding skin. Some keloids feel soft and doughy. Others are hard and rubbery.
- Cause pain, itching, or tenderness. When they are growing, some keloids may be itchy, tender, or painful to the touch. These symptoms usually stop once the keloid stops growing.
What causes keloids?
After your skin is injured, your cells try to repair it by forming a scar. In some people, the scar tissue keeps forming long after the wound heals. This extra scar tissue causes the raised area on your skin that is called a keloid. Doctors still aren’t sure why some people’s skin scars this way.
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