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Eruptive vellus hair cysts.
Utpal Patel1, Vitaly Terushkin, Max Fischer
1The Ronald O. Perelman Department of Dermatology, New York University School of Medicine, USA.
Dermatology Online Journal
|January 5, 2013
Summary
Eruptive vellus hair cysts (EVHC) are benign skin growths appearing as small, asymptomatic papules in young individuals. Diagnosis relies on characteristic histopathology, with treatments focusing on cosmetic improvement.
Area of Science:
- Dermatology
- Histopathology
Background:
- Eruptive vellus hair cyst (EVHC) is a rare, benign skin condition.
- First described in 1977, it presents as sudden-onset papules.
Observation:
- EVHC typically affects children and young adults.
- Lesions are monomorphic, follicular, and asymptomatic.
Findings:
- Diagnosis is confirmed via histopathology.
- Key findings include stratified-squamous epithelium, a granular layer, cystic spaces, laminated keratin, and vellus hairs.
Implications:
- EVHC can be associated with steatocystoma multiplex.
- A proposed etiology involves cystic changes in the pilosebaceous duct.
- Treatment options include retinoids, surgery, and laser therapy for cosmetic reasons.
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