How health anxiety affected obsessive-compulsive symptoms during the COVID-19 pandemic in China: The mediation of difficulties in emotion regulation and the moderation of pathological personality traits

Health anxiety (HA) was/is a common negative emotional problem during the COVID-19 pandemic. According to the cognitive model of HA, individuals with HA continued to adopt a series of maladaptive and repetitive behaviors which were associated with obsessive-compulsive symptoms (OCS; including over-washing, over-checking, obsessing, and metal neutralizing). The priority of the present study was to explore how HA specifically affected OCS and whether difficulties in emotion regulation (DER) and pathological personality traits (PPT) affected the relationship between the HA and OCS. We distributed an online survey from February 1 to February 17 in 2020 (N = 1546, with average age of 25.8, and 32.7% of males) from 219 cities in China. Results showed that only four dimensions (i.e., Nonacceptance, Impulse, Non-clarity and Non-awareness) of the DER scale mediated in the predictive path of HA on OCS, which constituted a multiple mediating model. The other moderated mediation model further showed that, with higher PPT, the more significant the impact of HA was on DER, revealing PPT's moderator role between HA and OCS.