Gary W. Cole, MD, FAAD
Dr. Cole is board certified in dermatology. He obtained his BA degree in bacteriology, his MA degree in microbiology, and his MD at the University of California, Los Angeles. He trained in dermatology at the University of Oregon, where he completed his residency.
Melissa Conrad Stöppler, MD
Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.
- What is a keloid?
- What is the difference between a keloid and a hypertrophic scar?
- What is the cause of keloids?
- Which people are most susceptible to keloids?
- In which area of the body are keloids most likely to appear?
- Keloids and piercing
- What are keloid symptoms and signs?
- Is keloid prevention possible?
- Is keloid removal necessary?
- What are the treatments for keloids?
- Find a local Dermatologist in your town
What is a keloid?
Keloids can be considered to be "scars that don't know when to stop." A keloid, sometimes referred to as a keloid scar, is a tough heaped-up scar that rises quite abruptly above the rest of the skin. It usually has a smooth top and a pink or purple color. Keloids are irregularly shaped and tend to enlarge progressively. Unlike scars, keloids do not regress over time.
What is the difference between a keloid and a hypertrophic scar?
After the skin is injured, the healing process usually leaves a flat scar. Sometimes the scar is hypertrophic, or thickened, but confined to the margin of the original wound. Hypertrophic scars tend to be redder and often regress spontaneously (a process which can take one year or more). Treatment, such as injections of cortisone (steroids), can speed this process.
Keloids, by contrast, may start sometime after a cutaneous injury and extend beyond the wound site. This tendency to migrate into surrounding areas that weren't injured originally distinguishes keloids from hypertrophic scars. Keloids typically appear following surgery or injury, but they can also as a result of some minor inflammation, such as an acne pimple on the chest (even one that wasn't scratched or otherwise irritated). Other minor injuries that can trigger keloids are burns and cosmetic piercings.
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