The intersection of traumatic brain injury and posttraumatic chronic pain poses a significant challenge for the health practitioner. Effective intervention requires psychological and neuropsychological evaluation, multidisciplinary teamwork, and an understanding of a wide range of pain disorders and their relationship to traumatic brain injury. Assessment must include documentation of both current functioning and premorbid history. Pain interacts with cognitive impairment, mood and anxiety disorders, dysinhibition syndromes, and personality disorders, posing significant diagnostic dilemmas and treatment challenges. Coordinated care requires multiple, ongoing interventions from a variety of specialists. Patient involvement, focusing on internal locus of control, mediates successful treatment.
The Cognitive Difficulties Scale, a self-report measure of cognitive functioning, was administered to 111 consecutive adult referrals with posttraumatic head pain subsequent to mild to moderate head and/or cervical flexion-extension injuries who were treated at a clinic specializing in head pain and neurological disorders. Factor analysis of the Cognitive Difficulties Scale yielded seven meaningful factors corresponding to the types of memory inefficiencies often associated with neurological dysfunction. Further analyses comparing the Cognitive Difficulties Scale factor scores to objective tests of mental status, memory, and depressed mood demonstrated limited relationships between specific Cognitive Difficulties Scale factor scores and these measures of cognitive performance and behavior. The Cognitive Difficulties Scale appears helpful in assisting this patient population with treatment planning and specific remediation tied to everyday situations.
The management of patients with chronic refractory head pain remains a treatment challenge. Treatment focus should be multidisciplinary as patients evolve into a deteriorated status with psychologic, social, vocational, and cognitive dysfunction. The neuropsychologist will gather premorbid and comorbid information, assess cognitive functioning, and be involved in every behavioral medicine and treatment decision. The patient with post-traumatic head pain copes with head injury sequelae. Issues related to worker's compensation, insurance, disability decisions, and litigation are intrinsic to these patient groups.
This study addresses (1) the relationship between headache presence/intensity at time of testing and neurocognitive performance, and (2) the probability that testing triggers or intensifies pain. Subjects were 125 patients with chronic posttraumatic headache (mean = 2.67 years post injury) who completed a 4-hour test battery emphasizing memory. Comparisons of 34 individual tests/subtests and the five Wechsler Memory Scale-Revised (WMS-R) indices of relative memory impairment for 73 patients with no headache or mild headache versus 52 patients with moderate to severe pain revealed no significant differences. Testing intensified existing headaches for 55% but triggered headache for only 1 of 20 (5%; P =.00003). Results support the validity of neuropsychological test performance regardless of pain level, although testing can be painful.
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