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GlossaryTrichoepithelioma

benign skin tumor originating from hair follicles

Trichoepithelioma is a benign skin tumor that originates from hair follicles. It typically appears as small, firm, flesh-colored or slightly pink nodules, often on the face, and is usually non-cancerous. While it is generally harmless, multiple lesions can sometimes be associated with genetic conditions, and a dermatologist may perform a biopsy to confirm the diagnosis.

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research Cytokeratin 15 Expression in Trichoepitheliomas and a Subset of Basal Cell Carcinomas Suggests They Originate from Hair Follicle Stem Cells

133 citations , March 1999 in “Journal of Cutaneous Pathology”

Trichoepitheliomas and some basal cell carcinomas likely come from hair follicle stem cells.

research The Clinicopathological Spectrum of Trichoepitheliomas: A Retrospective Descriptive Study

6 citations , July 2015 in “International Journal of Dermatology”

Trichoepitheliomas can be hard to distinguish from other skin conditions and often start in teenage years.

research Multiple Trichofolliculomas Mimicking Multiple Trichoepitheliomas

5 citations , March 2015 in “Indian Journal of Dermatology”

Multiple trichofolliculomas can look like multiple trichoepitheliomas on the face.

research A Case of Multiple Trichoepitheliomas Associated with Alopecia Areata and Systemic Lupus Erythematosus

1 citations , April 2016 in “Journal of the American Academy of Dermatology”

Autoimmune conditions can be linked to trichoepitheliomas, with treatment focusing on cosmetic concerns.

research CPC14 Blaschko-Linear Trichoepitheliomas: Unveiling Type 1 Segmental Mosaicism

June 2025 in “British Journal of Dermatology”

A rare skin condition in a boy is likely due to a specific genetic mutation pattern.

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