Papule
A papule is a circumscribed, solid elevation of skin with no visible fluid, varying in area from a pinhead to 1 cm.[2][nb 1] It can be brown, purple, pink or red in color, and can cluster into a papular rash. Papules may open when scratched and become infected and crusty.[3] Larger non-blisterform elevated lesions may be termed nodules.
Papule | |
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Fibrous papule of the nose | |
Pronunciation |
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Specialty | Dermatology |
Papules may have differes and are sometimes associated with other features such as crusts or scales.
Causal diseases
There are many skin diseases which develop papules, such as lichen planus, a skin disease which classically forms polygonal, purple papules.[4]
Footnotes
- With regard to the quote "...varying in size from a pinhead to 1cm," depending on which text is referenced, some authors state the cutoff between a papule and a plaque as 0.5cm, not 1cm, while others state an entirely different measurement. Therefore, for this article, the 1cm cutoff is used which is discussed in Andrews' Diseases of the Skin: Clinical Dermatology (see references), a work considered by some dermatologists as an authority on this subject matter. See Lack of Standardization for complete discussion.
References
- "Papule definition and meaning - Collins English Dictionary".
- James, William; Berger, Timothy; Elston, Dirk (2005) Andrews' Diseases of the Skin: Clinical Dermatology (10th ed.). Saunders. Page 15. ISBN 0-7216-2921-0.
- "papule" at Dorland's Medical Dictionary
- "Information on Pimple". 1 August 2016.
External links
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