Irregular hyperpigmented structureless areas (irregular blotch)

From dermoscopedia

Main PageHistopathological correlationIrregular hyperpigmented structureless areas (irregular blotch)
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 Editor: Ralph P. Braun

 Author(s): Ralph P. Braun     ·  Katrin Kerl
Description In this chapter we describe the dermoscopyThe examination of [skin lesions] with a 'dermatoscope'. This traditionally consists of a magnifier (typically x10), a non-polarised light source, a transparent plate and a liquid medium between the instrument and the skin, and allows inspection of skin lesions unobstructed by skin surface reflections. Modern dermatoscopes dispense with the use of liquid medium and instead use polarised light to cancel out skin surface reflections. term irregular hyperpigmented structureless areasThis glossary term has not yet been described. (irregular blotchMore than one blotch or a blotch that is located off center) and its histopathological correlation
Author(s) Ralph P. Braun · Katrin Kerl
Responsible author Ralph Braun→ send e-mail
Status released
Status update July 2, 2018
Status by Ralph P. Braun


Irregular blotches are defined as those that are asymmetric, have irregular contours, are located off center, and/or display multiple dark hues (i.e., heterogenous dark hues). Irregular blotches are associated with melanomaThis glossary term has not yet been described..

Atypical blotch 37.jpg
Irregular blotch.jpg
Irregular blotch histopathology.jpg