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