The Yellow Clod Sign

Navarini, Alexander A.; Feldmeyer, Laurence; öndury, Bettina T; Fritsche, Philipp; Kamarashev, Jivko; French, Lars E.; Braun, Ralph P.

doi:10.1001/archdermatol.2011.297

Cited by 27 publications

(24 citation statements)

References 2 publications

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“…Focal whitish scales are sometimes visible, but they are always associated with the aforementioned “yellowish findings” [13, 26–28]. According to the disease stage, eczematous dermatitis may display some differences, with acute exudative lesions mainly showing yellow scale/crusts (“yellow clod sign”) and chronic and lichenified lesions predominantly displaying dotted vessels in a patchy distribution and scaling [1, 13, 29, 30]. …”

Section: Dermatoses Presenting With Erythematous-desquamative Patchesmentioning

confidence: 99%

Dermoscopy in General Dermatology: A Practical Overview

Errichetti

Stinco

2016

Dermatol Ther (Heidelb)

326

364

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Over the last few years, dermoscopy has been shown to be a useful tool in assisting the noninvasive diagnosis of various general dermatological disorders. In this article, we sought to provide an up-to-date practical overview on the use of dermoscopy in general dermatology by analysing the dermoscopic differential diagnosis of relatively common dermatological disorders grouped according to their clinical presentation, i.e. dermatoses presenting with erythematous-desquamative patches/plaques (plaque psoriasis, eczematous dermatitis, pityriasis rosea, mycosis fungoides and subacute cutaneous lupus erythematosus), papulosquamous/papulokeratotic dermatoses (lichen planus, pityriasis rosea, papulosquamous sarcoidosis, guttate psoriasis, pityriasis lichenoides chronica, classical pityriasis rubra pilaris, porokeratosis, lymphomatoid papulosis, papulosquamous chronic GVHD, parakeratosis variegata, Grover disease, Darier disease and BRAF-inhibitor-induced acantholytic dyskeratosis), facial inflammatory skin diseases (rosacea, seborrheic dermatitis, discoid lupus erythematosus, sarcoidosis, cutaneous leishmaniasis, lupus vulgaris, granuloma faciale and demodicidosis), acquired keratodermas (chronic hand eczema, palmar psoriasis, keratoderma due to mycosis fungoides, keratoderma resulting from pityriasis rubra pilaris, tinea manuum, palmar lichen planus and aquagenic palmar keratoderma), sclero-atrophic dermatoses (necrobiosis lipoidica, morphea and cutaneous lichen sclerosus), hypopigmented macular diseases (extragenital guttate lichen sclerosus, achromic pityriasis versicolor, guttate vitiligo, idiopathic guttate hypomelanosis, progressive macular hypomelanosis and postinflammatory hypopigmentations), hyperpigmented maculopapular diseases (pityriasis versicolor, lichen planus pigmentosus, Gougerot-Carteaud syndrome, Dowling-Degos disease, erythema ab igne, macular amyloidosis, lichen amyloidosus, friction melanosis, terra firma-forme dermatosis, urticaria pigmentosa and telangiectasia macularis eruptiva perstans), itchy papulonodular dermatoses (hypertrophic lichen planus, prurigo nodularis, nodular scabies and acquired perforating dermatosis), erythrodermas (due to psoriasis, atopic dermatitis, mycosis fungoides, pityriasis rubra pilaris and scabies), noninfectious balanitis (Zoon’s plasma cell balanitis, psoriatic balanitis, seborrheic dermatitis and non-specific balanitis) and erythroplasia of Queyrat, inflammatory cicatricial alopecias (scalp discoid lupus erythematosus, lichen planopilaris, frontal fibrosing alopecia and folliculitis decalvans), nonscarring alopecias (alopecia areata, trichotillomania, androgenetic alopecia and telogen effluvium) and scaling disorders of the scalp (tinea capitis, scalp psoriasis, seborrheic dermatitis and pityriasis amiantacea).

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Section: Dermatoses Presenting With Erythematous-desquamative Patchesmentioning

confidence: 99%

Dermoscopy in General Dermatology: A Practical Overview

Errichetti

Stinco

2016

Dermatol Ther (Heidelb)

326

364

View full text Add to dashboard Cite

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“…6 When an intense hyperkeratosis impedes the visualization of underlying structures, scale removal will bring to light the aforementioned vascular pattern, possibly together with tiny red blood drops (the dermoscopic 'Auspitz sign'). 6,13,14 Pityriasis rosea Both the herald patch and the secondary lesions of pityriasis rosea dermoscopically display peripheral whitish scales ('collarette sign'), typically combined with dotted vessels that lack the regular distribution of psoriasis. 11 Dermatitis Dotted vessels in a patchy distribution and yellow serocrusts represent the main dermoscopic criteria in all subtypes of dermatitis (Figs 1d and 2d).…”

Section: Psoriasismentioning

confidence: 99%

Dermoscopy in general dermatology: practical tips for the clinician

Giacomel²,

et al. 2014

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In addition to its well-documented value in improving the diagnosis of skin tumours, dermoscopy is continually gaining appreciation in the field of general dermatology. Dermoscopy has been shown to facilitate the clinical recognition of several inflammatory and infectious diseases, as well as their discrimination from skin tumours. Moreover, recent data indicate that it might also be profitable in assessing the outcome and adverse effects of various treatments. Application of dermoscopy should follow the standard procedure of acquiring information from patient history and clinically evaluating the number, location and morphology of the lesion(s). Four parameters should be assessed when applying dermoscopy in the realm of inflammatory and infectious diseases: (i) morphological vascular patterns; (ii) arrangement of vascular structures; (iii) colours; and (iv) follicular abnormalities, while the presence of other specific features (clues) should also be evaluated. It must be underlined that dermoscopic findings should always be interpreted within the overall clinical context of the patient, integrated with information from the history and the macroscopic examination. With new evidence continuously being gathered, the dermatoscope gradually acquires a role similar to the stethoscope of general practitioners, becoming an irreplaceable clinical tool for dermatologists. In this article, we provide a succinct summary of existing data on dermoscopy in general dermatology. Practical tips are suggested, which can assist clinicians in profitably utilizing and applying the available knowledge in their everyday practice.

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“…The scales observed in all patients with NE were also observed in three patients (21.4%) with LA, and the difference was statistically significant ( P < 0.05). Thus, it is not right to completely rule out LA with scales alone, and it is important to closely observe the shiny yellow clods, which was reported by Navarini et al ., or the irregularly distributed brownish‐red globules for diagnosis of NE. Except scales, all dermoscopic findings of LA and NE were observed exclusively on one side of two diseases.…”

Section: Discussionmentioning

confidence: 99%

“…analyzed the dermoscopic findings of three LA patients and reported: (i) a brownish to coppery‐red diffuse coloration of the background; (ii) round to oval red dots, globules and patches; (iii) some gray dots; and (iv) a network of brown or gray interconnected lines. Dermoscopic findings of NE were reported in only a few cases, and presence of shiny yellow clods was also reported . However, there have been no previous studies focusing on dermoscopic differences between LA and NE.…”

Section: Introductionmentioning

confidence: 98%

Diagnostic usefulness of dermoscopy in differentiating lichen aureus from nummular eczema

Suh

Park

Yang

et al. 2016

The Journal of Dermatology

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Lichen aureus (LA) is a variant of pigmented purpuric dermatosis that is characterized clinically by rust macules, papules or plaques, mainly on the legs. In some cases, LA can be difficult to be distinguished from nummular eczema (NE) with the naked eye. Dermoscopy can be applied to skin lesions, revealing additional features that can be highly valuable for correct diagnosis. This study was conducted to investigate characteristic dermoscopic findings of LA and to identify distinctive features that can differentiate it from NE. Fourteen LA patients and 14 NE patients diagnosed by skin biopsy were enrolled. Skin lesions were evaluated via polarized dermoscopy. On dermoscopy, "coppery orange diffuse coloration of background", "round to oval red globules", "gray dots", and "networks of brownish to gray interconnected lines" were more commonly seen in LA (100%, 92.9%, 42.9% and 64.3%, respectively) compared with NE. "Scales", "shiny yellow clods" and "irregularly distributed brownish-red globules" were more commonly seen in NE (100%, 85.7% and 57.1%, respectively) compared with LA. Dermoscopy provides valuable information for diagnosis of LA and aids in differentiating it from NE.

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The Yellow Clod Sign

Cited by 27 publications

References 2 publications

Dermoscopy in General Dermatology: A Practical Overview

Dermoscopy in General Dermatology: A Practical Overview

Dermoscopy in general dermatology: practical tips for the clinician

Diagnostic usefulness of dermoscopy in differentiating lichen aureus from nummular eczema

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