Last Updated: 2022-03-25

Author(s): Anzengruber F., Navarini A.

ICD11: EE60.0Z

Alibert, 1816

Bead scar, scar proliferation, scar keloid.

Enlarged scar due to connective tissue proliferation (collagen type I).

  • Especially young adults
  • Increased risk with the following geographical origin
    • Africans (up to 20-fold higher incidence compared to Caucasians)
    • Asians

  • After trauma or spontaneously
  • Increased collagen synthesis (structural proteins are replaced mainly by collagen type I)

  • Especially in the face, pre-sternally, and on the upper arms, there are exophytic, hypertrophic, skin-coloured, coarse palpable, sharply delimited, plate-like or nodular bulges, often with telangiectasia
  • Loss of hair
  • Unlike a hypertrophic scar, the keloid extends beyond its original boundaries

  • Clinical
  • Biopsy to delineate differential diagnoses, if necessary

Trunk, face, upper arms.

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