Hyperpigmented structureless areas (blotches)
|Description||In this chapter we describe the dermoscopy term hyperpigmented structureless area (blotch) and its histopathological correlation|
|Author(s)||Ralph P. Braun · Katrin Kerl · Oriol Yélamos|
|Responsible author||Ralph Braun → send e-mail|
|Status update||July 2, 2019|
|Status by||Ralph P. Braun|
In this chapter we describe the dermoscopy term hyperpigmented structureless area (blotch) and its histopathological correlation
It has the following subchapters:
A blotch is defined as an area with a size that is at least 10% of the lesion’s surface area and is heavily pigmented. In a blotch the melanin pigment is often present throughout the skin, including the stratum corneum, epidermis, and the dermis . The dark pigment in a blotch visually obscures the ability to discern any underlying structures . Blotches can be regular or irregular.
- Yadav et al.: Histopathologic correlates of structures seen on dermoscopy (epiluminescence microscopy). Am J Dermatopathol 1993;15:297-305. PMID: 8214386.
- Kittler et al.: Standardization of terminology in dermoscopy/dermatoscopy: Results of the third consensus conference of the International Society of Dermoscopy. J. Am. Acad. Dermatol. 2016;74:1093-106. PMID: 26896294. DOI.