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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.


Causes:

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:

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

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