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. 2018 Apr;4(2):78-81.
doi: 10.1159/000479166. Epub 2017 Aug 12.

Alopecic and Aseptic Nodules of the Scalp: First Report in South America and Second in America

Cristián Fischer-Levancini  1 , Matías Gompertz  2 , Antonio Guglielmetti  3 , Héctor Opazo  4
Affiliations

Alopecic and Aseptic Nodules of the Scalp: First Report in South America and Second in America

Cristián Fischer-Levancini et al. Skin Appendage Disord. 2018 Apr.

Abstract

Alopecic and aseptic nodules of the scalp, also named pseudocysts of the scalp, are a relatively new, little-known, and for sure underdiagnosed disease. It affects mostly young men and is characterized by a solitary or a few dome-shaped nodules accompanied by nonscarring alopecia, deep inflammatory infiltration in the skin biopsy specimen, and, in most cases, granulomas. It has a good response to doxycycline, intralesional corticosteroids, or drainage/aspiration of the lesion. We present a case report and a summary of the published cases.

Keywords: Alopecia; Alopecic and aseptic nodules of the scalp; Pseudocyst of the scalp.

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Figures

Fig. 1
Fig. 1
Two soft and dome-shaped nodules, slightly erythematous and alopecic on its surface, surrounded by normal scalp.
Fig. 2
Fig. 2
Hematoxylin and eosin staining. Superficial and deep perivascular mixed inflammation and deep chronic folliculitis.
Fig. 3
Fig. 3
Eighteen weeks after finishing doxycycline. Note the disappearance of nodules and hair growth.
See this image and copyright information in PMC

References

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