Early onset female pattern hair loss: A case-control study for analyzing clinical features and genetic variants.

Background: Female pattern hair loss (FPHL), the most common cause of alopecia in adult women, is classified into two subtypes: early onset and late onset (or postmenopausal). Little is known about the clinical features and genetic characteristics of early onset female pattern hair loss (eFPHL).

Objectives: To investigate the clinical features and genetic characteristics of eFPHL.