Keloid scars are raised, firm, smooth, and shiny scars on the skin. They can develop anywhere on the body but are most commonly found on the torso, face, and earlobes. These scars can be the same colour as the skin or pink, red, purple, brown, or darker. Keloids can vary in size and shape, with a keloid appearing round and solid on an earlobe, while a keloid on the chest or shoulder may spread across the skin.

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Keloids usually develop a few weeks to years after an injury to the skin. They can continue to grow for weeks or months afterwards. They rarely go away independently and can cause pain or discomfort while increasing. However, the pain usually goes away when the keloid stops growing.

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Keloids result from an abnormal healing process in which too much scar tissue is produced due to the skin's overreaction to damage. This is caused by an excessive production of collagen, elastin, and other proteins.

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Surgical excision has been the most common treatment for keloids in the past, but it has shown a high recurrence rate. Laser treatment alone or in combination with other forms of treatment, such as corticosteroid injections, wearing silicone sheets, and applying pressure, can significantly reduce the recurrence rate.