Pigmentary Demarcation Lines over the Face

Malakar, Subrata; Dhar, Sandipan

doi:10.1159/000018330

Cited by 14 publications

(18 citation statements)

References 4 publications

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“…Interestingly, this was observed to conform to what has been previously mentioned as pigmentary demarcation line type F (PDL-F). [15] It was also described that PDL-F extended as periorbital pigmentation. [16] We have also observed that the lateral margins of the perioral pigmentation roughly follow the nasolabial fold in the upper part and the mentolabial fold in the lower part.…”

Section: Discussionmentioning

confidence: 99%

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Acquired, Idiopathic, Patterned Facial Pigmentation (AIPFP) including periorbital pigmentation and pigmentary demarcation lines on face follows the Lines of Blaschko on face

2014

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Background:Acquired, non-nevoid, apparently idiopathic facial pigmentation are distributed over some specific locations like periorbital area, zygomatic area, malar area, root of nose, perioral and mandibular area. Periorbital pigmentation is the most well known entity in this group. These are bilaterally distributed homogenously diffuse gray to dark gray or slate-gray colored patches showing progressive intensification of pigmentation. These are often considered as physiologic or constitutional pigmentation. Some portions of the margins of these patches were described previously as pigmentary demarcation line (PDL- F, G, H).Aim:To analyze the distributional patterns of acquired, apparently idiopathic facial pigmentations and to evaluate the etiologic aspects of these conditions.Materials and Methods:Spatial patterns, distribution, and orientation were analyzed among 187 individuals with idiopathic non-nevoid, facial pigmentation. Observed patterns were compared with various pigmentary nevi and Blaschko's lines on face.Results:It was found that most of the idiopathic facial pigmentary alterations including periorbital pigmentation and PDL on face had specific patterned distribution that had high similarity to that of the pigmentary nevi and Blaschko's lines on face.Conclusion:It is hypothesized here that phenotypic expression of acquired patterned pigmentation (AIFPFP) is due to genetically determined increased pigmentary functional activity to various known and unknown yet natural factors like UV rays and aging. Mosaicism was a definite possibility. We also consider that the patterns actually reflected the normal patterns of embryological human pigmentation on face.

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Section: Discussionmentioning

confidence: 99%

“…[19] Several types of PDL have been described. [151720] It had been postulated that PDLs are distributed along the cutaneous nerves and the dermatomes. [2122] Role of hormones[23] and genetics[24] had also been suggested.…”

Section: Discussionmentioning

confidence: 99%

Acquired, Idiopathic, Patterned Facial Pigmentation (AIPFP) including periorbital pigmentation and pigmentary demarcation lines on face follows the Lines of Blaschko on face

2014

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“…Groups A and C tend to be distinct and are evident in both individuals of sub‐Saharan African lineage and Japanese. More recent classifications include lines F, G, and H . Type B lines are commonly associated with pregnancy .…”

Section: Clinical Presentationmentioning

confidence: 99%

Voigt‐Futcher pigmentary demarcation lines

Zieleniewski

Schwartz

Goldberg

et al. 2019

J of Cosmetic Dermatology

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“…5 Type G: It has been described as two inverted cones lying in close proximity, looking like the letter 'W', with a faint strip of normal pigmentation in between.…”

Section: 3mentioning

confidence: 99%

“…2 On the basis of their location they have been classified into eight types, Type A to Type H, including the recently described facial pigmentary demarcation lines. [3][4][5] In a study in India, by Somani et al, facial PDLs, especially types F and G, were observed regularly in other family members, pointing to a genetic predisposition.…”

Section: Introductionmentioning

confidence: 99%

Pigmentary demarcation lines: a clinical profile of 50 subjects and report of new pattern of pigmentation observed

Antony¹,

Kumar

2018

Int J Res Dermatol

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Background: Pigmentary demarcation lines (PDL) correspond to a border of abrupt transition between the more deeply pigmented skin of the outer surfaces and the lighter inner surfaces. On the basis of their location they have been classified into eight types, type A to type H. The present study is an attempt to obtain a better understanding of the clinical types of pigmentary demarcation lines in Indians, and to report any previously undescribed patterns of pigmentation.Methods: Patients attending the Outpatient Department for various complaints were examined for the presence of pigmentary demarcation lines, and those with pigmentary demarcation lines were analysed further.Results: 50 subjects of Fitzpatrick skin types 4 and 5, with pigmentary demarcation lines were examined in detail. The various types of pigmentary demarcation lines seen were Type A (38%), Type B (14%), Type C (24%), Type F (22%), Type G (4%), Type H (4%). All types were more common in females with the exception of Type C, which was observed only in males. Type D and Type E PDL were not observed in any of the subjects screened.Conclusions: The most common type of PDL observed in our study was Type A PDL, followed by Type C PDL. The youngest subject was 2 years old, the oldest was aged 75.The majority were seen in adults; Type A and Type C PDL were the common types seen in children. A family history of PDL was present in 5 (10%) and all were females. A hitherto undescribed pigmentary demarcation line is also described along with this study.

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Pigmentary Demarcation Lines over the Face

Cited by 14 publications

References 4 publications

Acquired, Idiopathic, Patterned Facial Pigmentation (AIPFP) including periorbital pigmentation and pigmentary demarcation lines on face follows the Lines of Blaschko on face

Acquired, Idiopathic, Patterned Facial Pigmentation (AIPFP) including periorbital pigmentation and pigmentary demarcation lines on face follows the Lines of Blaschko on face

Voigt‐Futcher pigmentary demarcation lines

Pigmentary demarcation lines: a clinical profile of 50 subjects and report of new pattern of pigmentation observed

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