Eruptive vellus hair cysts

Utpal Patel, Vitaly Terushkin, Max Fischer, Hideko Kamino, Rishi Patel

Research output: Contribution to journalArticlepeer-review


Eruptive vellus hair cyst (EVHC), described initially in 1977, is a benign dermatologic condition that is characterized by the sudden appearance of monomorphic, follicular, asymptomatic, small papules in children and young adults. The diagnosis is based on the histopathologic findings of stratified-squamous epithelium with a granular layer that surrounds a cystic space filled with laminated keratin and a variable number of vellus hair cysts. EVHC can be associated with steatocystoma multiplex. A current hypothesis suggests that EVHC originates from a cystic change at the insertion of the pilosebaceous duct. EVHC is primarily treated for cosmesis with retinoids, surgery, and lasers.

Original languageEnglish (US)
Number of pages1
JournalDermatology Online Journal
Issue number12
StatePublished - Dec 1 2012

ASJC Scopus subject areas

  • Dermatology


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