Dermatoscopy: Alternative uses in daily clinical practice

Dermatology Clinic, University of Catania, Catania, Italy.
Journal of the American Academy of Dermatology (Impact Factor: 4.45). 02/2011; 64(6):1135-46. DOI: 10.1016/j.jaad.2010.03.010
Source: PubMed


Dermatoscopy, also known as dermoscopy, epiluminescence microscopy, or surface microscopy, is a noninvasive technique allowing rapid and magnified (× 10) in vivo observation of the skin with the visualization of morphologic features often imperceptible to the naked eye. Videodermatoscopy (VD) represents the evolution of dermatoscopy and is performed with a video camera equipped with lenses providing higher magnification (× 10 to × 1000). Over the past few years, both dermatoscopy and VD have been demonstrated to be useful in a wide variety of cutaneous disorders, including ectoparasitic infestations, cutaneous/mucosal infections, hair and nail abnormalities, psoriasis, and other dermatologic as well as cosmetologic conditions. Depending on the skin disorder, both dermatoscopy and VD may be useful for differential diagnosis, prognostic evaluation, and monitoring response to treatment. Nowadays, it represents an important and relatively simple aid in daily clinical practice.

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Available from: Francesco Lacarrubba, Oct 06, 2015
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    • "Dermatoscopy is a noninvasive technique allowing rapid and magnified in vivo observation of the skin with the visualization of morphologic features often imperceptible to the naked eye.[5] AA is usually diagnosed based on clinical appearance. "
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    ABSTRACT: Dermatoscopy is a new noninvasive tool for the diagnosis of various skin and hair disorders. Dermatoscopy of alopecia areata (AA) shows various specific features, which may aid in confirming the diagnosis. The aim of this study was to determine the various clinical patterns and the dermatoscopic features of AA. A total of 75 patients of AA were evaluated with a dermatoscope (magnification ×25 and ×60). The mean age of onset of AA was 23.58 years. Males were more commonly affected. Scalp was most commonly involved. Patchy alopecia was the most common pattern observed. 10 patients showed concomitant nail changes. The dermatoscopic features included yellow dots (YDs) in 43 (57.33%) patients, black dots (BDs) in 63 (84%) cases, broken hairs (BHs) in 28 (37.33%) cases, short vellus hair (SVH) in 51 (68%) patients and tapering hair (TH) in 14 (18.67%) cases. The most common dermatoscopic finding observed was BDs, followed by SVHs, YDs, BH and TH.
    International Journal of Trichology 07/2013; 5(3):132-6. DOI:10.4103/0974-7753.125608
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    • "In a study on 112 patients with head and neck by Caresana and Giardini, compared to the naked eye, digital (video) dermoscopy showed the lesion margin correctly in a higher percentage of the patients (93% for 78%).[6] Also in another study, the margin of BCCs of head and neck in 200 patients were determined with dermoscopy and confirmed with histopathology that dermoscopy had determined the lesion margin in 197 patient exactly.[7] "
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    • "In addition to hair density, the diameter of the hair fibers also contributes greatly to the appearance of hair. Despite the known fact of hair miniaturization during AGA progression, few methods are available to monitor changes in hair diameter for office dermatologists besides global photography and simple magnified scalp exam (dermatoscopy),[10111212] which are not quantitative. Although sophisticated measuring methods are available, their use has been limited to research facilities and industry laboratories. "
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    ABSTRACT: To properly assess the progression and treatment response of alopecia, one must measure the changes in hair mass, which is influenced by both the density and diameter of hair. Unfortunately, a convenient device for hair mass evaluation had not been available to dermatologists until the recent introduction of the cross-section trichometer, which directly measures the cross-sectional area of an isolated bundle of hair. We sought to evaluate the accuracy and sensitivity of the HairCheck(®) device, a commercial product derived from the original cross-section trichometer. Bundles of surgical silk and human hair were used to evaluate the ability of the HairCheck(®) device to detect and measure small changes in the number and diameter of strands, and bundle weight. Strong correlations were observed between the bundle's cross-sectional area, displayed as the numeric Hair Mass Index (HMI), the number of strands, the silk/hair diameter, and the bundle dry weight. HMI strongly correlated with the number and diameter of silk/hair, and the weight of the bundle, suggesting that it can serve as a valid indicator of hair mass. We have given the name cross-section trichometry (CST) to the methodology of obtaining the HMI using the HairCheck(®) system. CST is a simple modality for the quantification of hair mass, and may be used as a convenient and useful tool to clinically assess changes in hair mass caused by thinning, shedding, breakage, or growth in males and females with progressive alopecia or those receiving alopecia treatment.
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