Unraveling the interconnectedness of trauma-related common mental disorders in Somali refugees: a network analysis.

backgroundRefugee populations, particularly Somali refugees, face disproportionately high rates of trauma-related common mental disorders (CMDs) due to prolonged exposure to war, forced displacement, and post-migration adversities. Traditional diagnostic models often conceptualize CMDs, including posttraumatic stress, depression, anxiety, and somatic symptoms, as distinct disorders, overlooking the symptom-level interconnections that sustain psychological distress. This study employs network analysis to examine the structure of PTSD, depression, anxiety, and somatic symptoms, identifying central symptoms that may represent important areas for further investigation in the development of culturally responsive mental health interventions.

methodsA total of 336 Somali refugee youth (ages 15-34) residing in Eastleigh, Nairobi, were recruited through snowball sampling in partnership with a community-based organization and local clinic. Validated measures assessed PTSD (PCL-C), depression and anxiety (HSCL-25), and somatic symptoms (a culturally adapted 7-item scale). A regularized partial correlation network was estimated using EBICglasso based on Spearman correlations. Symptom clusters were identified using the Walktrap algorithm, and strength centrality was computed to identify key symptoms and their explanatory power.

resultsFive distinct symptom clusters emerged: (1) anxiety symptoms and PTSD arousal/interference symptoms; (2) depressive symptoms with restlessness; (3) PTSD re-experiencing and avoidance symptoms; (4) PTSD emotional numbing and detachment symptoms; and (5) culturally specific somatic symptoms. Symptoms with the highest strength centrality included low energy, feeling trapped, panic, and feeling like a stone. These symptoms demonstrate network prominence and explanatory power, suggesting their potential relevance for future research on screening or treatment strategies.

conclusionsThese findings highlight the interconnected nature of CMDs among Somali refugees and provide initial insights for future research aiming to develop transdiagnostic, symptom-focused interventions. Central symptoms such as emotional detachment, hyperarousal, and culturally specific physical expressions of distress, like feeling frozen, emerge as salient features that may warrant further investigation in future research on trauma-informed, culturally grounded care approaches. Incorporating central symptoms into future research on screening tools and task-shifted care models may offer avenues to explore enhanced early identification and improved resource allocation.