A keloid is a type of raised scar that forms as a result of an overgrowth of fibrous tissue at the site of a skin injury. Unlike normal scars, keloids grow beyond the boundaries of the original wound and may continue to enlarge over time. They can appear firm, smooth, and rubbery, and may vary in color. Keloids are more common in individuals with darker skin tones and can result from cuts, burns, surgical incisions, or even acne. While harmless, they can cause discomfort or cosmetic concerns, and treatment options include corticosteroid injections, laser therapy, or surgical removal.