Frontal Fibrosing Alopecia Quality of Life Index: A Validated Disease-Specific Questionnaire Involving Women

Abstract

Quality of life (QoL) can be affected in patients with alopecia. The few studies that evaluate QoL in FFA use unspecific questionnaires. The aim of this report was to design and validate a specific questionnaire to assess the impairment of QoL in FFA patients. A specific questionnaire, called the Frontal Fibrosing Alopecia Quality of Life Index (FFA-QLI), was designed and validated using the Dermatology Life Quality Index (DLQI). One-hundred and one women with FFA were included. Cronbach’s alpha value was 0.865, and the intraclass correlation coefficient between all the items in the questionnaire was 0.870. The FFA-QLI correlated positively with the DLQI (r = 0.729, p < 0.001). Patients with severe FFA showed a higher FFA-QLI (19.72) score compared to those with a mild disease (14.11) (p = 0.002), and the area under the curve for identifying severe disease was greater in the FFA-QLI than in the DLQI. The cut-off points were used to select patients with mild, moderate, and severe impairment in QoL. A score < 21 in the FFA-QLI corresponded to a low impact on QoL; values > 35 matched with greater QoL impairment; and values ranging from 21 to 35 corresponded to moderate QoL alteration. To conclude, a validated disease-specific questionnaire to assess QoL in FFA patients is here presented, with a greater power to discriminate severe cases of FFA than the DLQI.