The association between parental chronic physical illness and adolescent functional somatic symptoms.

Background: Previous studies have found that adolescents with a chronically ill parent may experience more internalizing problems. It is less clear if this association is sex-related, and whether it is specific for functional somatic symptoms (FSSs) or concerns other internalizing or externalizing problems.

Methods: In a prospective cohort of adolescents, oversampled on emotional and behavioral problems (n = 841; mean age 14.9 years), we examined the association between parental chronic illness and adolescent's FSSs, and internalizing and externalizing problems. Adolescent's internalizing and externalizing symptoms were measured using the Youth Self Report; parental chronic physical illness was reported during an interview. Associations were tested using linear regression analyses taking into account socio-demographic confounders. We also explored gender-interaction effects.

Results: Having a chronically ill parent (n = 120; 14.3 %) was associated with more FSS in girls (B = 1.05, 95%CI = [0.23, 1.88], p = .013), but not in boys (sex-interaction: p = .013). In girls, an association was also found between parental chronic illness and more internalizing problems (B = 2.68, 95%CI = [0.41, 4.95], p = .021), but this association disappeared when FSSs were excluded from the Internalizing problem scores.

Limitations: The current study has a cross-sectional design and relied on self-reported parental chronic physical illness what may have induced misclassification.

Conclusion: Findings suggest that having a chronically ill parent is associated with more FSSs in adolescent girls and that this association is specific for FSSs instead of general internalizing problems. Girls with a chronically ill parent may profit from interventions to prevent the development of FSSs.