Relationship Between Posttraumatic Headache and Depression After Mild Traumatic Brain Injury

Mild traumatic brain injury (mTBI) can lead to psychiatric and somatic symptoms for some patients, including posttraumatic headache (PTH) and depression. This study attempted to further establish the relationship between PTH and depression following mTBI and investigate whether the presence of PTH immediately following injury can identify patients at risk for developing depressive symptoms up to 6 months later.

This study was a secondary analysis of data from Head Injury Serum Markers for Assessing Response to Trauma (HeadSMART), a prospective study of adult patients in the emergency department with head injury. Participants included 265 patients who met criteria for mTBI and completed the Rivermead Post-Concussion Symptoms Questionnaire, to identify PTH within 24 hours after injury, and the Patient Health Questionnaire-9, to assess depressive symptoms during follow-up. Measures were completed at the initial visit immediately after the injury in the emergency department and at 1-, 3-, and 6-month follow-up visits.

Patients with acute PTH (aPTH) at time of injury were more likely to report PTH at 1, 3, and 6 months. They also had more severe depressive symptoms and a greater likelihood of clinically significant depression at all time points.

Patients with aPTH within 24 hours after injury were more likely to report continued symptoms of PTH and clinically significant depression at 1, 3, and 6 months. These findings provide support for using the presence of aPTH in the emergency department following mTBI as an indicator for monitoring persistent PTH and depressive symptoms in the postacute recovery period.