Workplace and Healthcare Stigma in Hereditary Angioedema: Links to Anxiety and Functional Impairment

Background/Objectives: Stigmatization is an under-recognized burden in hereditary angioedema (HAE) that may exacerbate psychosocial distress and functional impairment. Although links to adverse outcomes exist, the domain-specific pathways remain insufficiently characterized. This study investigated the impact of stigma types (workplace, healthcare, social) on anxiety, quality of life, and functional impairment, specifically testing the mediating role of disease-specific quality of life. Methods: This single-center, cross-sectional study included 60 adults with confirmed HAE. Participants completed the Chronic Illness Anticipated Stigma Scale (CIASS), Hospital Anxiety and Depression Scale (HADS), Angioedema Quality of Life Questionnaire (AE-QoL), and Work Productivity and Activity Impairment Questionnaire (WPAI). Hierarchical regression and mediation analyses were used to assess relationships between stigma domains, psychosocial outcomes, and activity impairment. Results: Female patients reported significantly higher anxiety (d = 0.85) and poorer quality of life (d = 0.77) compared to males. In hierarchical regression models, workplace stigma was a significant predictor of activity impairment (p = 0.002). Mediation analysis suggested an indirect association between workplace stigma and activity impairment through disease-specific quality of life (Indirect effect = 1.22; 95% CI: 0.29–3.01). Conclusions: Anticipated stigma in HAE appears to follow domain-specific patterns, with workplace stigma showing the strongest association with functional impairment and poorer disease-specific quality of life. Female gender emerged as an independent correlate of anxiety. These findings underscore the need for HAE management strategies that integrate psychosocial evaluation alongside biomedical control.