Frontal fibrosing alopecia: a descriptive cross-sectional study of 711 female cases from the U.K.

Frontal fibrosing alopecia (FFA) is an inflammatory primary scarring alopecia of uncertain aetiology that represents a variant of lichen planopilaris.1 It predominantly, although not exclusively, affects post-menopausal women.2 Its pathogenesis is characterised by immune-mediated follicular destruction at the level of the hair bulge, which leads to a clinical phenotype of progressive fronto-temporal hair and eyebrow loss that is often preceded by widespread body hair loss.