Hypochromic scars

Hypochromic or acromic scars may be types of hypopigmentation or depigmentation due to a partial or total loss of melanocytes causing a loss of melanin in the epidermis. It is the healing inflammatory process that is causing a destruction of melanocytes through collagen modification and micro-vascularisations1.

There are several ways to treat this type of scar:

  • Natural heliotherapy (only for hypochromic scars)2
    Exposure of the treated area to sunlight in summer, spring and autumn to achieve a slight erythema (pink appearance of the skin)
  • 308 nm UVB excimer laser (only for hypochromic scars)2
    Treatment that involves exposure to UV 2-3 times a week to stimulate the activity of melanocytes in the area to be treated
  • Mini skin grafting2
    Punch grafts taken from a healthy donor area of the patient are transferred to the depigmented area
  • Melanocytes grafting2
    Direct transfer onto the depigmented area of non-cultured epidermal basal cells (keratinocytes and melanocytes) from the epidermis dissociation of a graft taken from a healthy donor area

 

1- Nordlund JJ, et al. Confusions about color: formulating a more precise lexicon for pigmentation, pigmentary disorders, and abnormalities of "chromatics". J Am Acad Dermatol 2006 May;54(5 Suppl 2):S291-S297.

2- Boutchneï S, Gauthier Y. Greffes Mélanocytaires. In: Amici JM, editor. Chirurgie Dermatologique. Elsevier Masson; 2012. p. 341-8.

Mis à jour le 2016-05-23

 

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