This is known as a hypertrophic scar. Keloids Keloid arising after injury Keloid arising after ear piercing It is not known why keloids appear. While most people never form keloids, others develop them after minor injuries, even insect bites or pimples. Keloids may form on any part of the body, although the upper chest and shoulders are especially prone to them. Dark skinned people form keloids more easily than Caucasians.
Keloids are usually just a cosmetic problem.
They never become malignant. There is no satisfactory treatment for the majority of keloids. If you have a keloid, seek the advice of your general practitioner, dermatologist or plastic surgeon. Surgical removal must be performed with great care as it may result in a second keloid even larger than the original one. When repeated every few weeks the keloid usually reduces in size and irritation.