Stress and Disease Onset in Antineutrophil Cytoplasmic Antibody-Associated Vasculitis.

Objective: To explore the potential contribution of stress as a trigger for disease onset in patients with antineutrophil cytoplasmic antibody (ANCA) associated vasculitis (AAV). Methods: 53 AAV and 85 rheumatoid arthritis (RA) patients as well as 53 healthy controls (HC) were thoroughly asked for the number and impact of stressful life events, coping strategies, and available social support 12 months prior to disease onset. Anxiety, depression, personality dimensions, insomnia, and fatigue were also determined. Results: AAV patients reported higher scoring of the impact of stressful life events compared to the RA and HC group prior to disease onset (2.8 +/- 3.1 vs 1.8 +/- 2.1 vs 1.7 +/- 2.3, p-values: 0.047 and 0.053, respectively). While the number of reported stressful events was found to be significantly higher in AAV vs RA patients but not HC, certain coping strategies and social support features were more commonly implemented by AAV patients compared to HC, but not RA patients. As far as personality and other psychosocial characteristics, AAV patients displayed significantly higher psychoticism traits compared to RA, with no other differences being detected between AAV patients and both RA and HC. After adjusting for potential cofounders, scoring of the impact of stressful life events >3 was independently associated with AAV development compared to both RA and HC [ORs (95% CI): 4.6 (1.6-13.4) and 4.4 (1.0-19.0), respectively]. Conclusion: The perceived impact of stressful life events prior to disease onset emerged as a contributing factor for AAV development.