In a study conducted by Amane Tateno, Ricardo E. Jorge, and Robert G. Robinson of the University of Iowa College of Medicine, aggressive behavior was found in 33.7 percent of TBI patients and 11.5% of patients without TBI during the first six months after injury.
Their paper, entitled “Clinical Correlates of Aggressive Behavior After Traumatic Brain Injury” identifies aggression as an associated feature of TBI:
“Aggressive behaviors have also been related to the presence of brain lesions in specific locations such as the hypothalamus, paralimbic areas of the temporal lobe, and the prefront cortex.”
“In TBI patients with both aggression and depression disorder are associated with poor social functioning.”
The finding conclude that treatment of major depression and substance abuse may help reduce episodes of aggression in patients who have suffered TBI.