Fact-checked
х

All iLive content is medically reviewed or fact checked to ensure as much factual accuracy as possible.

We have strict sourcing guidelines and only link to reputable media sites, academic research institutions and, whenever possible, medically peer reviewed studies. Note that the numbers in parentheses ([1], [2], etc.) are clickable links to these studies.

If you feel that any of our content is inaccurate, out-of-date, or otherwise questionable, please select it and press Ctrl + Enter.

Hair cyst: causes, symptoms, diagnosis, treatment

Medical expert of the article

Dermatologist
, medical expert
Last reviewed: 23.04.2024

Hair cyst [syn: trichylemal (pilar) cyst, follicular cyst, sebaceous cyst] may be single or multiple, especially in women older than 40 years. It occurs mainly on the scalp, rarely on the skin of the back and other places, can exist from birth or, more often, appears in the elderly, reaches a considerable size, has a dense elastic consistency, is painless. Often there are family forms, inherited, probably, autosomal dominant.

Pathomorphology of the hair cyst. The wall of the hairy cyst is lined with an epithelium similar in structure to the epithelium in the region of the isthmus of the hair follicle, which is characterized by the presence of basal and prickly layers and the absence of granular layers. The contents of the cyst consist of a homogeneous keratin, sometimes with deposits of cholesterol and crystals of fatty acids. In 25% of cases, cyst is calcified. If the cyst wall breaks around its contents, a giant-cellular reaction can occur.

trusted-source[1], [2], [3], [4]

What do need to examine?

How to examine?


The iLive portal does not provide medical advice, diagnosis or treatment.
The information published on the portal is for reference only and should not be used without consulting a specialist.
Carefully read the rules and policies of the site. You can also contact us!

Copyright © 2011 - 2025 iLive. All rights reserved.