Keywords: all-or-nothing behavior; catastrophic thinking; chronic fatigue syndrome; fatigue; prospective.
Patients with inflammatory bowel disease (IBD) often report fatigue. However, the reasons for this are poorly understood. In this study of people with IBD, we demonstrate that all-or-nothing behavior (being very active then needing to resting a while) and catastrophic thinking (making very negative assumptions about outcomes) both predict worsening in fatigue over time.