From dermoscopedia

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 Authored by: Sabine Ludwig     ·  Aimilios Lallas

 Keywords:   dermatitis · general medicine
Description This chapter describes dermoscopyDermoscopy is a non invasive diagnostic method. of Dermatitisalso known as eczema is a group of diseases that results in inflammation of the skin.
Author(s) Sabine Ludwig · Aimilios Lallas
Owner Aimilios Lallas→ send e-mail
Status released
Status update July 11, 2017
Status by Ralph P. Braun

Dermatitis: yellow scales and dotted vesselstiny pinpoint vessels flat melanocytic lesions inflammatory diseases Bowen disease


Despite their variable etiopathologies, all forms of dermatitisalso known as eczema is a group of diseases that results in inflammation of the skin. show similar histopathologic just as similar dermoscopic characteristics. Dermatitis usually exhibits red dots in a patchy distribution and yellow scales.[1] The red dots are identical to the vesselsThis glossary term has not yet been described. in psoriatic lesions, but unlike psoriasisThis glossary term has not yet been described., their distribution is not homogenous and regular, but rather clustered, generating an irregular, “patchy” pattern.[1]

SuperficialThis glossary term has not yet been described. scaling is a frequent characteristic of dermatitis, but opposed to psoriasis and other erythematosquamous skin diseases, the scales in dermoscopy of dermatitis reveal a yellow colorColor (American English) or colour (Commonwealth English) is the characteristic of human visual perception described through color categories, with names such as red, yellow, purple, or blue. either alone, or in combination with white. [1] Belonging to the group of the characteristic yellow scales, the “yellow clod sign” is frequently observed in nummular eczema.[2] Notably, yellow scale color is dermoscopically detected not only in acute, but also in chronic dermatitis. Contact dermatitis, nummular eczema, generalized dermatitis, chronic dermatitis, seborrheic dermatitis and other subtypes were reported to reveal similar findings in dermoscopy, but further investigation on their specific pattern is needed.[1][3][4]

ReferencesThis glossary term has not yet been described.
  1. 1.0 1.1 1.2 1.3 Lallas et al.: Accuracy of dermoscopic criteria for the diagnosis of psoriasis, dermatitis, lichen planus and pityriasis rosea. Br. J. Dermatol. 2012;166:1198-205. PMID: 22296226. DOI.
  2. Navarini et al.: The yellow clod sign. Arch Dermatol 2011;147:1350. PMID: 22106141. DOI.
  3. Vázquez-López et al.: Dermoscopic semiology: further insights into vascular features by screening a large spectrum of nontumoral skin lesions. Br. J. Dermatol. 2004;150:226-31. PMID: 14996092.
  4. Lallas et al.: Dermoscopy of early stage mycosis fungoides. J Eur Acad Dermatol Venereol 2013;27:617-21. PMID: 22404051. DOI.