A cross-sectional cohort study of post-concussive symptoms and their relationships with depressive symptoms in youth with and without concussion.

This study further demonstrates that post-concussive symptoms are nonspecific and provide little functional utility. Post-concussive and depressive symptoms are strongly correlated, particularly in females with concussion. Psychiatric comorbidities and other medical diagnoses should be assessed pre-injury because both affect interpretation of post-concussive symptom reports.