ACUTE ILLNESS   Acute illness is by definition a self-limiting disease which is mostly characterized by the symptoms having a rapid onset. These symptoms are fairly â¦ intense and resolve in a short period of time as either cure or death in the patient.
Definition. Traumatic brain injury (TBI) is a nondegenerative, noncongenital insult to the brain from an external mechanical force, possibly leading to permanent or temporary impairment of cognitive, physical, and psychosocial functions, with an associated diminished or altered state of consciousness.
A Collaboration of the Missouri Department of Health and Senior Services and the MU Department of Health Psychology. Indices of Injury Severity. TBI's are generally graded as mild, moderate, or severe. Mild TBIs include concussions; these generally do not show lesions on MRI or CT scans. TBIs are specified as mild complicated or moderate when imaging shows evidence of lesion(s).