A Case of Congenital Pili Multigemini

This document describes a rare case of congenital pili multigemini in an 8-month-old female infant, presenting as a 1x1 mm area on the lateral right eyebrow with multiple hair shafts emerging from a single follicular unit. Pili multigemini is a hair follicle disorder where multiple hair shafts arise from the same follicle, commonly seen in men's facial hair but rarely reported in other areas. The condition is benign and asymptomatic, requiring no treatment unless for cosmetic reasons. Diagnosis is clinical, aided by trichoscopy, which shows clumps of pigmented hairs emerging from the same follicular orifice. The etiology is not fully understood, but it may involve activation of silent germ cells. This case highlights the potential underdiagnosis or under-reporting of congenital pili multigemini.