Neurodiagnostic testing in patients with closed head injury.

This brief review summarizes the current understanding of mild closed head injury with postconcussion syndrome. It is to be emphasized that objective evaluation be performed because it is critical to the assessment of the patient. Increased awareness of patients with symptoms in association with heightened sensitivity and caring will go a long way in helping the millions of patients yearly with mild to moderate head injury. Only with objective scientific data will the understanding of the causes of the varied symptomatology of the postconcussion syndrome be thoroughly understood.