A Comparative Study of Dermatoscopic Features of Acne-related Postinflammatory Hyperpigmentation in Facial and Nonfacial Areas in Asian Patients
Issued Date
2022-08-01
Resource Type
ISSN
19412789
Scopus ID
2-s2.0-85148897251
Journal Title
Journal of Clinical and Aesthetic Dermatology
Volume
15
Issue
8
Start Page
16
End Page
21
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Clinical and Aesthetic Dermatology Vol.15 No.8 (2022) , 16-21
Suggested Citation
Jurairattanaporn N. A Comparative Study of Dermatoscopic Features of Acne-related Postinflammatory Hyperpigmentation in Facial and Nonfacial Areas in Asian Patients. Journal of Clinical and Aesthetic Dermatology Vol.15 No.8 (2022) , 16-21. 21. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/85640
Title
A Comparative Study of Dermatoscopic Features of Acne-related Postinflammatory Hyperpigmentation in Facial and Nonfacial Areas in Asian Patients
Author(s)
Other Contributor(s)
Abstract
BACKGROUND: Postinflammatory hyperpigmentation (PIH) is a common problem, especially in patients with darker skin tones. It can occur on any area of the body following external injuries or intense inflammatory conditions. However, there is limited evidence regarding the differences in dermatoscopic patterns between facial acne-related PIH and nonfacial acne-related PIH. OBJECTIVE: We sought to determine the dermatoscopic features of acne-related PIH in facial and nonfacial areas in an Asian population. METHODS: Patients with acne-related PIH in both facial and nonfacial areas were enrolled. Baseline demographic data, location, and duration of PIH were recorded. Dermatoscopic and clinical pictures of each patient were taken from the darkest PIH lesions of both areas. Differences in dermatoscopic patterns were analyzed. RESULTS: Fifty patients were enrolled. The mean age was 26.74 (+ 6.75) years, and the Fitzpatrick Skin Types were III (66%) and IV (34%). In terms of morphological patterns of melanin, nonfacial PIH showed a significantly more regular pigment network than facial PIH (100% vs. 20%, p<0.05), while facial PIH exhibited a more pseudoreticular pigment network than nonfacial PIH (70% vs. 0%, p<0.05). In terms of vascularity, facial PIH demonstrated more telangiectasia and an increased vascular component compared to nonfacial PIH (56% vs. 16%, p<0.05). Moreover, hypopigmentation within the PIH lesion was demonstrated in both facial and nonfacial lesions (42% vs. 50%, p=0.541). CONCLUSION: Acne-related PIH in facial and nonfacial areas showed different morphological pigment patterns and degrees of vascularity. Dermatoscopic examination should be performed before treatment initiation.