Personality and neuroimaging measures differentiate PTSD from mTBI in veterans

Brain Imaging and Behavior
Nicholas D DavenportScott R Sponheim

Abstract

Mild traumatic brain injury (mTBI) is common among recent veterans and often is associated with chronic post-concussive symptoms (PCS). Elevated PCS may also be a consequence of post-traumatic stress disorder (PTSD) which shares symptoms with PCS. Identification of personality, biological, and psychopathology factors that contribute to the relationship between mTBI and PCS could help isolate the sources of chronic post concussive syndrome in veterans. Clinician rated diagnoses (PTSD, Major Depression, Alcohol Dependence), personality characteristics (Multidimensional Personality Questionnaire [MPQ] subscales), white matter brain imaging measures (Mean Diffusivity, Generalized Fractional Anisotropy), and diagnoses of mTBI were collected from 125 American military veterans of Iraq or Afghanistan. Linear and logistic regression models were tested to determine contributions to PCS and whether there were similar contributors to PTSD and mTBI. PCS score was associated with personality characteristics of high Stress Reaction and Traditionalism and low Control as well as mTBI. A diagnosis of PTSD was associated with low Social Closeness, PCS, Alcohol Dependence, and abnormal white matter mean diffusivity. Diagnosis of mTBI was associat...Continue Reading

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Citations

Aug 3, 2021·Biological Psychiatry·Andrew R Mayer, Davin K Quinn

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