Eruptive vellus hair cysts.

Area of Science:

• Dermatology
• Histopathology

Background:

• Eruptive vellus hair cysts (EVHCS) are uncommon follicular hamartomas.
• Diagnosis is typically based on clinical presentation and confirmed by histopathology.

Observation:

• Three new cases of histologically confirmed EVHCS are reported.
• One case featured lesions on the eyelid, a less common location.

Findings:

• The eyelid presentation expands the clinical spectrum of EVHCS.
• Histological confirmation remains the gold standard for diagnosis.

Implications:

• Increased awareness of EVHCS, especially with atypical presentations like eyelid involvement.
• Consideration of EVHCS in the differential diagnosis of eyelid tumors and cysts.
• Further research into the etiology and management of EVHCS.