Frontal fibrosing alopecia (FFA) is considered as a variant of lichen planopilaris with an unclear pathogenesis. First described in postmenopausal women, FFA has recently been reported in young men and women.1, 2, 3, 4, 5 The recent worldwide incidence of this disease, mainly among women, raises the possibility of hormonal disruption by endogenous or exogenous factors.
This multicenter retrospective study aimed to describe the clinical features and sex hormone profile of men with FFA and no previous history of sex hormone disorders using a chart and image review from 2019 to 2021. All subjects were asked to have their hormone profiles prepared. The study was approved by the Ethics Committee of the University of Sao Paulo, Brazil.