TERMINOLOGY
At times, describing the rash is the hardest part, but doing so is crucial to differentiating and grouping different types of rashes.
Common terms used to describe dermatological eruptions are presented in Table 1.
Table 1. Common Dermatological Terms Term Definition
Example Petechiae
Picture
Macule
Flat lesion less than 1 cm, without elevation or depression
From Hektor. (2006). Obraz purpury https:// commons.wikimedia.org/wiki/File:Purpura.jpg. CC BY-SA 3.0
Patch
Flat lesion greater than 1 cm, without elevation or depression
Vitiligo
From La Verdad. (2018). Vitiligo segmentarhttps:// commons.wikimedia.org/wiki/File:Vitiligo_ segmentar.jpg. CC BY-SA 4.0
Plaque
Flat, elevated lesion, usually greater than 1 cm
Psoriasis
From Otman, H. (2019). Psoriasis on elbow. https:// commons.wikimedia.org/wiki/File:Psoriasis_on_ elbow.jpg CC BY-SA 3.0
Papule
Elevated, solid lesion less than 1 cm
Angioma, wart
From Fruitsmaak , S. (2006). Two viral warts on a middle finger, treated with a mixture of acids (like salicylic acid) to remove them. https://commons. wikimedia.org/wiki/File:Wart_ASA_animated.gif. CC BY-SA 3.0
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Book Code: AUS3024
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