Almost half of people suffering traumatic brain injury may later be diagnosed with axis I disorders.

Main results 48% of participants had an axis I disorder that began after traumatic brain injury. 62% had an axis I disorder during their lifetimes. Common new disorders following traumatic brain injury were major depression (27%), alcohol abuse or dependence (12%), panic disorder (8%), specific phobia (8%) and psychotic disorders (7%). 23% had at least one personality disorder. Conclusions Traumatic brain injury may be associated with susceptibility to depression, delusional disorder and personality disturbances. The authors emphasise the importance of psychiatric follow-up after traumatic brain injury.