Frontal Fibrosing Alopecia Severity Index: A Trichoscopic Visual Scale That Correlates Thickness of Peripilar Casts with Severity of Inflammatory Changes at Pathology

Background Frontal fibrosing alopecia (FFA) is a scarring alopecia that mainly affects postmenopausal women characterized by recession of the frontotemporal hairline and eyebrow loss. Current techniques to assess FFA activity are limited and involve noninvasive tools that assess disease progression or an invasive technique such as scalp biopsies. However, since progression of FFA is very slow, it is very important to develop a noninvasive technique to assess disease activity to monitor treatment response.