Depressed scar - Depressiewe Litteken

Depressiewe litteken (Depressed scar) sit onder die oppervlak van die vel en het ’n gesinkte of gekrulde voorkoms. Aknee is ’n algemene oorsaak van hierdie litteken.

Behandeling
#Ice pick scar - TCA peeling (CROSS technique)
#Rolling scar - Laser resurfacing by Erbium laser or fractional laser
Meer inligting ― Afrikaans
References Methods for the Improvement of Acne Scars Used in Dermatology and Cosmetology: A Review 35628870 
NIH
Acne vulgaris is 'n langtermynveltoestand wat verskeie soorte puisies, soos swartkoppies en siste, veroorsaak. As dit nie behoorlik behandel word nie, kan dit littekens veroorsaak. Hierdie oorsig ondersoek verskillende tipes aknee-littekens en maniere om dit te verbeter. Daar is drie hooftipes: icepick, rolling, boxcar scars, wat in diepte en voorkoms verskil. Daar is baie effektiewe behandelings beskikbaar, insluitend lasers, radiofrequency, micro‑needling, chemical peels.
Acne vulgaris is a chronic skin disease that, depending on its course, is characterized by the occurrence of various skin eruptions such as open and closed comedones, pustules, papules, and cysts. Incorrectly selected treatment or the presence of severe acne vulgaris can lead to the formation of atrophic scars. In this review, we summarize current knowledge on acne scars and methods for their improvement. There are three types of atrophic scars: icepick, rolling, and boxcar. They are of different depths and widths and have different cross-sections. Scars can combine to form clusters. If acne scars are located on the face, they can reduce the patient's quality of life, leading to isolation and depression. There are multiple effective modalities to treat acne scars. Ablative lasers, radiofrequency, micro-needling, and pilings with trichloroacetic acid have very good treatment results.
 A systematic review and meta-analysis on the effects of the ultra-pulse CO2 fractional laser in the treatment of depressed acne scars 35249351
Hierdie studie het ses vraestelle gebruik om te ondersoek hoe goed die ultra‑puls CO₂‑fraksionele laser depressiewe akne‑littekens behandel. Die resultate het getoon dat hierdie laserbehandeling meer effektief was as ander metodes, wat gelei het tot beter uitkomste wat gemasseer word in verbeterde syfers en ’n gladder velgevoel by pasiënte.
This study examined 6 papers about how well the ultra-pulse CO2 fractional laser treats depressed acne scars. The results showed that this laser treatment was more effective compared to other methods, leading to better outcomes in terms of improvement rates and how smooth patients' skin felt.