It might seem counter intuitive, but there is evidence that supports the treatment of co-morbid PTSD and mild traumatic brain injury (mTBI) with CPT.
Crocker et al. (2019) trialed a variation of CPT modified for mTBI; SMART-CPT combined compensatory cognitive training components of Cognitive Symptom Management and Rehabilitation Therapy (CogSMART) with CPT.
Crocker et al. (2019) found that both CPT and SMART-CPT resulted in clinically significant reductions in PTSD and postconcussive symptomatology and improvements in quality of life. SMART-CPT resulted in additional improvements in the neuropsychological domains of attention/working memory, verbal learning/memory and novel problem solving.
An earlier study by Chard et al. (2011) also found that CPT was effective for those with both mild and moderate TBI and PTSD.
References
Crocker, L. D., Jurick, S. M., Thomas, K. R., Keller, A. V., Sanderson-Cimino, M., Hoffman, S. N., . . . Jak, A. J. (2019). Mild traumatic brain injury characteristics do not negatively influence cognitive processing therapy attendance or outcomes. Journal of Psychiatric Research, 116, 7-13. doi:https://doi.org/10.1016/j.jpsychires.2019.05.022
Chard, K. M., Schumm, J. A., McIlvain, S. M., Bailey, G. W., & Parkinson, R. B. (2011). Exploring the efficacy of a residential treatment program incorporating cognitive processing therapy-cognitive for veterans with PTSD and traumatic brain injury. Journal of Traumatic Stress, 24(3), 347-351. doi:http://dx.doi.org/10.1002/jts.20644
