Health and Medical Psychology Clinical Psychology

Structural Modeling of Pain Intensity in Adolescents with Migraine: Intolerance of Uncertainty, Perceived Social Support, and the Mediating Role of Anxiety Sensitivity

Migraine adolescents intolerance of uncertainty perceived social support anxiety sensitivity

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Objective: This study tested a structural equation model of migraine pain intensity, examining whether anxiety sensitivity mediates the effects of intolerance of uncertainty and perceived social support.

Methods and Materials: In a cross-sectional study, 420 adolescents with neurologist-confirmed migraine were recruited from clinics and secondary schools in Tabriz, Iran. Participants completed scales of intolerance of uncertainty, perceived social support, and anxiety sensitivity, and recorded headache pain intensity in numeric-rating diaries. Structural equation modeling with robust estimation was used to test direct and indirect paths; indirect effects were evaluated with bootstrapping.

Findings: Intolerance of uncertainty was positively associated with anxiety sensitivity, whereas perceived social support was negatively associated (β= 0.49 and β= −0.36, respectively; both p<0.001). Anxiety sensitivity predicted higher pain intensity (β = 0.30, p<0.001). Direct paths from intolerance of uncertainty and perceived social support to pain remained significant (β= 0.27 and β= −0.21, p< 0.001). The model showed acceptable fit and explained substantial variance in anxiety sensitivity and pain intensity. Bootstrapped indirect effects via anxiety sensitivity were significant for both intolerance of uncertainty (β= 0.15) and perceived social support (β= −0.11).

Conclusion: Anxiety sensitivity appears to be a key mechanism linking cognitive vulnerability and social resources to migraine pain in adolescence. Interventions that reduce intolerance of uncertainty and anxiety sensitivity and strengthen perceived support may help lower pain intensity in this population.