Diffuse facial melanosis – An overview of etiology and dermoscopic findings

Dharman, Bijina Kolukulangara; Sridhar, Swetha

doi:10.25259/jsstd_42_2019

Cited by 4 publications

(4 citation statements)

References 26 publications

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“…Maturational hyperpigmentation, a poorly understood facial melanosis seen in Black individuals also shows dermoscopic features different from facial acanthosis nigricans 36 . Also, melasma, Riehl's melanosis, lichen planus pigmentosus, erythema dyschromicum perstans, poikiloderma of Civatte, cutaneous amyloidosis show different dermoscopic features from acanthosis nigricans 37‐39 . Thus this obviates the need for histopathology and other systemic investigations in such patients.…”

Section: Discussionmentioning

confidence: 94%

Therapeutic implications of dermoscopic findings in acanthosis nigricans: A clinical and histopathological study

Pardeshi

Khemani

Kamath

et al. 2020

Dermatologic Therapy

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Acanthosis nigricans is associated with numerous systemic disorders. These include endocrinological conditions such as, diabetes, acromegaly, Cushing's syndrome, thyroid dysfunction, as well as metabolic abnormalities like obesity and polycystic ovarian disease. Its association with visceral malignancy is known. Moreover, Acanthosis nigricans is known to be a cutaneous marker of insulin resistance (IR) and hyperinsulinemia. The primary aim of this study was to study clinical and histopathological patterns of acanthosis nigricans and its correlation with dermoscopic patterns and treatment implications. 103 patients clinically diagnosed as acanthosis nigricans were enrolled in the study. Clinical evaluation, dermoscopy, and skin biopsy was done for histopathological evaluation. Consistency was observed in the changes seen on dermoscopy with clinical and histopathological findings. Common dermoscopy findings were Crista Cutis, Sulcus Cutis, Papillary projections, hyperpigmented dots, crypts, and blotching Dermoscopic findings can be correlated with histopathological features. Dermoscopy allows visualization on higher magnification which helps to pick up subtle changes which are not visible to naked eye. Dermoscopy can be a useful tool to distinguish acanthosis nigricans from other pigmentary disorders in patients who are not willing for histopathological examination and helps in treatment making decisions.

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Section: Discussionmentioning

confidence: 94%

Therapeutic implications of dermoscopic findings in acanthosis nigricans: A clinical and histopathological study

Pardeshi

Khemani

Kamath

et al. 2020

Dermatologic Therapy

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“…4a) were characterized by exaggerated pseud-reticular hyperpigmentation, dots and globules, areas of diffuse, grayish-brown pigmentation sparing the acrosyringial openings, reticular pigmentation, erythema, whitish, perifollicular halo, follicular keratotic plugs, telangiectasia, and mild scaling. Dharman et al reviewed similar dermatoscopic findings in Riehl's melanosis [13]. Wang et al described the same dermatoscopic findings along with clinical, confocal, and histopathological reviews in Riehl's melanosis [14].…”

Section: Discussionmentioning

confidence: 90%

Clinical and dermatoscopic correlation in facial melanosis: A cross-sectional study at a tertiary hospital

Mohta¹,

Mohta²,

Mehta³

2023

Our Dermatol Online

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Background: Facial pigmentary disorders are a group of heterogeneous entities, sharing a common clinical feature of altered pigmentation of the face. The overlapping features among the different clinical entities of facial hyperpigmentation may be differentiated by dermatoscopy. Objective: The objective was to evaluate the different types of facial melanosis and their dermatoscopic findings. Methods: This non-interventional, cross-sectional study was conducted at our dermatology department over a period of one year. All clinically diagnosed cases of facial melanosis were included in our study and their dermatoscopic evaluation was performed. Results: We included 500 patients with facial melanosis. While 370 patients were female, 130 were males. Three hundred patients had melasma, 59 (lichen planus pigmentosus) had LPP, 40 had Riehl’s melanosis, while 35 had frictional melanosis. Other dermatoses included acanthosis nigricans, ashy dermatosis, and poikiloderma of Civatte, to name a few. The most common dermatoscopic finding in our study evident in almost all cases of facial melanosis was exaggerated pseudo-reticular hyperpigmentation. The unique observation in our study, the reticulo-globular pattern seen in melasma, was thin and in the shade of brown pigmentation, whereas in LPP and ashy dermatosis, it was comparatively thicker and grayish-brown in color. The other specific finding observed was telangiectasia due to topical steroids, more prominent and enlarged than telangiectasia due to sun exposure in melasma and poikiloderma of Civatte. Conclusion: This study highlights the clinical and dermatoscopic features of facial melanosis. Further research is required in this field of dermatoscopic evaluation of facial melanosis to define more accurate diagnostic features as a facial biopsy is mostly refused by the patients, yet meanwhile, clinical evaluation should not be neglected. Study Limitations: The limitations of our study were the lack of direct histopathological correlation and the inclusion of both therapy-naive patients and patients on therapy. Key words: Facial melanosis; Dermatoscope; Melasma

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“…Moreover, a "hem-like" pigment pattern has been noted, and the dermoscopy background is brown. [17,18] Riehl's Melanosis/Pigmented Cosmetic Dermatitis Riehls melanosis was found in 2% of patients. It is attributable to phototoxic reaction develops after skin contact with photoactive agents.…”

Section: Post Inflammatory Hypopigmentationmentioning

confidence: 99%

Dermoscopic Features of Pigmentary Disorders in Indian Skin : A Prospective Observational Study

Monica,

Madhulika,

Manmohan

2023

IJAR

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Introduction : Several studies have shown dermoscopy as an easily accessible tool for assisting the noninvasive diagnosis of various general dermatological disorders. The present study was conducted to evaluate the use of dermoscopy for diagnosis of pigmented skin lesions. Methods:In this Observational & Analytical study after Multi-staged Random sampling 100 study subjects /Patients were selected having various pigmentary lesions which were later evaluated by dermoscope. All the photographs were captured using android mobile camera and dermlite DL4 hybrid dermoscope (both polarised and nonpolarized). Results: Among the 100 patients /participants studied, 40% were males &60 % were females with the range of age between 3 to 60 years . The most common pigmentary lesions found were melasma (20%), Vitiligo (12%) , pityriasis versicolor(10%) among other types. Conclusion: Dermoscopy may result in confirmation of clinical diagnosis, oftenavoiding the need for a skin biopsy. Appreciation of the post-treatment effect via dermoscopy oftenprecedes clinical improvement this is especially true of chronic relapsing, recalcitrant dermatoses like melasma, lichen planus pigmentosus (LPP), vitiligo, alopecias, etc.Explaining the natureof the disorder becomes easier by patients showing the lesionaldermoscopic image to the patient.

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Diffuse facial melanosis – An overview of etiology and dermoscopic findings

Cited by 4 publications

References 26 publications

Therapeutic implications of dermoscopic findings in acanthosis nigricans: A clinical and histopathological study

Therapeutic implications of dermoscopic findings in acanthosis nigricans: A clinical and histopathological study

Clinical and dermatoscopic correlation in facial melanosis: A cross-sectional study at a tertiary hospital

Dermoscopic Features of Pigmentary Disorders in Indian Skin : A Prospective Observational Study

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