Pili multigemini: a pilar dysplasia with linear disposition.

Background. pill muItigemini is an uncommon pilar dysplasia with linear dis position which could be explained by the pattern of Blaschko's lines. Case report. A 37-year-old man with no medical history developed pill multi gemini over a heavily bearded chin. Discussion. Mill multigemini is an uncommon developmental defect of hair fo llicles resulting from hairs with multiple matrices and papillae emerging t hrough a single pilosebaceous canal. This defect has a linear distribution on the chin we found to follow Blaschko's lines. pill multigemini has been observed in association with a few rare malformations. Treatment is difficu lt.