In traumatic brain injured patients the basic functions of the cognitive, behavioral, emotional and intellectual systems are disturbed. The patients' ability to regulate the interaction between the ego and the external world is diminished and they present inflexible, concrete and sometimes inappropriate behavior. We have not observed anosognostic phenomena in these patients. Most of them are preoccupied with their physical impairments and unaware of their intellectual deficits. We hypothesize that this preoccupation or 'hyperprosexia phenomenon' may be observed in traumatic brain injured patients. The various neuropsychological, medical and philological aspects of these terms are discussed.