Perifollicular Erythema as a Trichoscopy Sign of Progression in Frontal Fibrosing Alopecia

The study evaluated 79 women diagnosed with frontal fibrosing alopecia (FFA) and found that 100% exhibited at least one dermoscopic sign typical of FFA, such as absence of follicular opening, follicular hyperkeratosis, follicular plugs, and erythema. Specifically, 66.3% showed perifollicular erythema, which was present in 95% of cases with active disease. The findings suggested that perifollicular erythema could serve as a direct marker of FFA activity.