Acne necrotica

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ICD-10 | L70.2
ICD-9 | 706.0

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:  Jesus Rosario Hernandez, M.D. [2].

Synonyms and keywords: acne (necrotica) varioliformis; acne (necrotica) miliaris

## Overview[edit | edit source]

Acne necrotica is a chronic necrotizing lymphocytic folliculitis characterized by umbilicated, erythematous papules that are 2–5 mm in diameter. The lesions may evolve rapidly into adherent hemorrhagic crusts and leave a permanent varioliform scar affecting areas close to the scalp margins (termed "acne necrotica varioliformis"). A milder disease, synonymous with Propionibacterium acnes folliculitis of the scalp, is featured by smaller, more numerous and itchy vesicopustular lesions distributed throughout the scalp without significant scarring (termed "acne necrotica miliaris").[1]

## Physical examination[edit | edit source]

### Gallery[edit | edit source]

* Acne necrotica.
Adapted from [http://www.atlasdermatologico.com.br/disease.jsf?diseaseId=4

* Acne necrotica.
Adapted from [http://www.atlasdermatologico.com.br/disease.jsf?diseaseId=4

* Acne necrotica.
Adapted from [http://www.atlasdermatologico.com.br/disease.jsf?diseaseId=4

* Acne necrotica.
Adapted from [http://www.atlasdermatologico.com.br/disease.jsf?diseaseId=4

* Acne necrotica.
Adapted from [http://www.atlasdermatologico.com.br/disease.jsf?diseaseId=4

* Acne necrotica.
Adapted from [http://www.atlasdermatologico.com.br/disease.jsf?diseaseId=4

* Acne necrotica.
Adapted from [http://www.atlasdermatologico.com.br/disease.jsf?diseaseId=4

## See Also[edit | edit source]

* Skin lesion
* Cicatricial alopecia

## References[edit | edit source]

1. ↑ Rook, Arthur (2010). Rook's textbook of dermatology. Chichester, West Sussex, UK Hoboken, NJ: Wiley-Blackwell. ISBN 1405161698.