Prevalence and Course of Unwanted, Intrusive Thoughts of Infant-Related Harm.

Unwanted, intrusive thoughts (UITs) of infant-related harm are a common postpartum phenomenon and can be classified into thoughts of accidental harm (TAHs) and thoughts of intentional harm (TIHs). Our study's objective was to complete a comprehensive, comparative analysis of TAHs and TIHs by commenting on their prevalence, course, characteristics (time, distress, and impairment) and most intense period. A total of 763 English-speaking pregnant women across British Columbia were recruited to participate in a prospective cohort study. Study data were collected between February 2014 and February 2017. UITs were assessed by semistructured interviews twice during the postpartum period. The prevalence of TAHs and TIHs in the postpartum period was 95.8% and 53.9%, respectively. The most common TAHs included thoughts of the baby suffocating or dying from sudden infant death syndrome; the most common TIHs included thoughts of neglect. On average, TAHs are more prevalent, time-consuming, and result in greater interference compared to TIHs. The most intense period for TAHs (5.74 weeks postpartum) and TIHs (within first 8 weeks postpartum) was identified. During this period, over 40% of participants reported moderate or extreme distress related to UITs. For most, UITs decreased in frequency or completely resolved by 6 months postpartum, and most participants did not report clinically significant symptoms. UITs are a normative and typically self-resolving occurrence in the postpartum period. UITs' most intense period signifies a time of heightened vulnerability. Increased education is necessary to normalize and reduce distress associated with UITs. .