Hair follicle nevus

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Hair follicle nevus is a cutaneous condition that presents as a small papule from which fine hairs protrude evenly from the surface.{{cite book |author=Rapini, Ronald P. |author2=Bolognia, Jean L. |author3=Jorizzo, Joseph L. |title=Dermatology: 2-Volume Set |publisher=Mosby |location=St. Louis |year=2007 |isbn=978-1-4160-2999-1 }}

Signs and symptoms

Hair follicle nevus usually presents as a single, skin-colored papule or nodule on the face after birth that exhibit no symptoms.{{cite journal | last1=Lee | first1=Ji Su | last2=Yang | first2=Ji Hoon | last3=Park | first3=Hyunsun | last4=Yoon | first4=Hyun-Sun | last5=Cho | first5=Soyun | title=Hair Follicle Nevus Located on the Neck: Comparison with Accessory Tragus, Cervical Chondrocutaneous Branchial Remnants and Trichofolliculoma | journal=Annals of Dermatology | publisher=Korean Dermatological Association and The Korean Society for Investigative Dermatology | volume=31 | issue=6 | year=2019 | pages=662–665 | issn=1013-9087 | doi=10.5021/ad.2019.31.6.662 | pmid=33911666 | pmc=7992593 }}

Diagnosis

Histologically, vellus hair follicle growth with perifollicular fibrous thickening occasionally encircled by a cellular stroma is the hallmark of hair follicle nevus. Smooth muscle fibers and eccrine and sebaceous glands are at times visible.

See also

References

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Further reading

  • {{cite journal | last1=Larson | first1=Krista N. | last2=O'Shea | first2=Patrick | last3=Zedek | first3=Daniel C. | last4=Morrell | first4=Dean S. | title=Hair Follicle Nevus Located on the Chin of an Infant: Case Report and Review of Literature | journal=Pediatric Dermatology | publisher=Wiley | volume=33 | issue=2 | year=2016 | issn=0736-8046 | doi=10.1111/pde.12825 | pmid=27001331 | ref=none}}
  • {{cite journal | last1=Harada | first1=Kazutoshi | last2=Kato | first2=Yuichiro | last3=Kato | first3=Yukihiko | last4=Tsuboi | first4=Ryoji | title=Hair Follicle Nevus with Sebaceous Hyperplasia: A Dermoscopic Observation | journal=Case Reports in Dermatology | volume=7 | issue=3 | date=2015-12-23 | issn=1662-6567 | pmid=26955332 | pmc=4777908 | doi=10.1159/000442969 | pages=358–362 | ref=none}}