Abstract
INTRODUCTION: Bullous pemphigoid (BP) is a chronic autoimmune blistering disorder that imposes a significant health-related quality of life burden on the lives of patients; however, there are limited data on patient experiences. METHODS: We conducted qualitative open-ended interviews of patients from the USA, Spain, and France, to understand BP symptoms and impacts, and develop a conceptual model. Adults with a confirmed BP diagnosis were included. Patients with pemphigus or drug-induced BP were excluded. RESULTS: Thirty participants were recruited. The mean (standard deviation) age was 63.6 (16.0) years. Eleven signs and symptoms and 24 impacts were reported; six signs and symptoms, and 13 impacts affected ≥ 50% of participants with an average disturbance rating of ≥ 5 out of 10 (scale of 0 to 10 [0, not disturbing; 10, extremely disturbing]). All participants reported typical signs and symptoms of classic and/or mucosal BP. Overall, five of six salient symptoms and four of 13 salient impacts had an average disturbance rating of ≥ 7.5/10, indicating that BP is highly burdensome. Regarding corticosteroids, participants expressed a strong desire to avoid taking them again, due to the associated unwanted side effects. CONCLUSION: The conceptual model presented here can be the basis for endpoint selection in studies of new therapies for BP.