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Hypertrophic scars and keloids are exuberant fibrous repair tissues after a cutaneous injury. A hypertrophic scar remains confined to the site of original injury; a keloid, however, extends beyond this site, often with clawlike extensions. May be cosmetically very unsightly and pose a serious problem for the patient if the lesion is large and on the ear or face.


No specific gene or set of genes has been identified as allowing keloids to develop; however, the increased prevalence of keloids paralleling increased cutaneous pigmentation suggests a genetic basis or, at least, a genetic linkage. Trauma to the skin, both physical (eg, earlobe piercing, surgery) and pathological (eg, acne, chickenpox), is the primary cause identified for developing keloids.


Symptoms include pigmentation of the skin, itchiness, redness, unusual sensations and pain.

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