Supplementary Material for: Responsiveness of the DLQI and the Colombian validated version of the Skindex-29 in scarring and non-scarring alopecia

Introduction: Alopecia is a frequent reason for consultation and is often associated with psychological, self-esteem and quality-of-life (QoL) impact, particularly in women. To date, quality of life assessment studies including all alopecia types are lacking. This study evaluated QOL and sensitivity to change of the Skindex-29 and the Dermatology Life Quality Index (DLQI) in these.
Methods: This was an observational study with a longitudinal design, including two measurements over time and prospective data. It was carried out in four outpatient centers in Medellín, between 2023-2024.
We included sociodemographic and clinical data, as well as the DLQI and Skindex-29 QoL questionnaires before and after treatment.
Results: Participation of women was 51%; the most frequent types of alopecia were androgenic alopecia (52%), alopecia areata (AA) (19%) and telogen effluvium (TE) (9%).
The alopecia types with the greatest impact on QOL (pretreatment) measured through the DLQI and the Skindex-29, respectively, were TE [10.29(±9.32) and 40.39 (±32.04)], AA [9.27(±9.13) and 33.91(±26.47)], dissecting cellulitis [8.67(±8.33) and 29.6(±15.33)] and lichen planus pilaris [6.75(±6.55) and 6.75(±6.55)].
Conclusion: The version validated in Colombia of the Skindex-29 and the Colombian Spanish version of the DLQI showed a moderate responsiveness when evaluating the QOL of patients with scarring and non-scarring alopecia, before and after starting specific treatment.