Childhood maltreatment and psychiatric comorbidity in immune-mediated inflammatory disorders.

OBJECTIVE To determine whether childhood maltreatment is associated with immune-mediated inflammatory disorders (IMID; multiple sclerosis [MS], inflammatory bowel disease [IBD] and rheumatoid arthritis [RA]). We further aimed to determine the relationship between maltreatment and psychiatric comorbidity in IMID and whether these relationships differed across IMID. METHODS 681 participants (MS: 232, IBD: 216, RA: 130, healthy controls: 103) completed a structured psychiatric interview to identify psychiatric disorders, and the Childhood Trauma Questionnaire to evaluate five types of maltreatment: emotional abuse, physical abuse, sexual abuse, emotional neglect and physical neglect. We evaluated associations between maltreatment, IMID and psychiatric comorbidity using multivariable logistic regression models. RESULTS The prevalence of having ≥1 maltreatment was similar across IMID, but higher than in controls (MS: 63.8%, IBD: 61.6%, RA: 62.3%, healthy controls: 45.6%). Emotional abuse was associated with having an IMID (adjusted odds ratio [aOR] 2.37; 1.15-4.89). In the sex-specific analysis, this association was only present in women. History of childhood maltreatment was associated with a lifetime diagnosis of a psychiatric disorder in the IMID cohort (OR 2.24; 1.58-3.16), but this association did not differ across diseases. In those with IMID, total types of maltreatments (aOR 1.36; 1.17-1.59) and emotional abuse (aOR 2.64; 1.66-4.21) were associated with psychiatric comorbidity. CONCLUSIONS Childhood maltreatment is more common in IMID than in a healthy population, and is associated with psychiatric comorbidity. Given the high burden of psychiatric disorders in the IMID population, clinicians should be aware of the contribution of maltreatment and the potential need for trauma-informed care strategies.