Are anxiety disorders a pathway to obsessive-compulsive disorder? Different trajectories of OCD and the role of death anxiety.

OBJECTIVES: A body of research has demonstrated high rates of comorbidity among individuals with obsessive-compulsive disorder (OCD). Further, recent empirical evidence has demonstrated the relevance of death anxiety in OCD. Given that the trajectory towards OCD remains unclear, the current study aimed to examine which disorders individuals typically experience prior to the onset of this disorder. Further, the study aimed to explore the role of death anxiety in the developmental pathways to the disorder. METHODS: The present study involved administering a measure of death anxiety and conducting structured diagnostic interviews among a treatment-seeking sample of 98 individuals with OCD. RESULTS: First, the findings revealed a number of anxiety-related disorders commonly experienced prior to the development of OCD, the most frequent of which were separation anxiety disorder, specific phobias, and generalised anxiety disorder. Second, consistent with hypotheses, individuals with higher death anxiety experienced more disorders prior to the onset of OCD. Conversely, those with lower fears of death were significantly more likely to develop OCD as their first disorder. CONCLUSIONS: These findings support the argument that death anxiety may influence the trajectory towards OCD, and the comorbidity among anxiety-related disorders. However, further research is needed to clarify whether death anxiety plays a causal role in this trajectory.