Kognitive Defizite bei Multipler Sklerose

Neuropsychological Assessment in Multiple Sclerosis

Abstract. Neuropsychological deficits in multiple sclerosis (MS) are common. Over the past decades, many different procedures have been employed in diagnosing these deficits. Even though certain aspects of cognitive performance such as information processing speed and working memory may be affected more frequently than other cognitive functions, no specific deficit profile has been established in MS. This article provides an overview of the neuropsychological diagnostic procedures in MS and allows the reader to reach an informed decision on the applicability of specific procedures and the availability of study data in the context of MS. Additionally, it makes recommendations on the compilation of both screening procedures and extensive test batteries.

Neuropsychological dysfunction, depression, physical disability, and coping processes in families with a parent affected by multiple sclerosis

Background

Families with a parent suffering from multiple sclerosis (MS) must cope with the unpredictable course of the disease. Most studies analyzing factors that influence coping abilities in families with a member affected with MS used questionnaires to assess this ability.

Methods

On the contrary, the present study used a semi-structured psychiatric interview and used the resulting information to calculate a general measure of coping ability (coping index [CI]). We administered this interview to 44 MS patients, their partners and offspring and conducted a neuropsychological and physical evaluation of the patients to determine the impact of physical disability, cognitive dysfunction, and depression on the process of coping by the patient, the healthy partner, and children.

Results

The CI of patients was best predicted by measures of their depressive symptoms, divided attention, and estimated verbal intelligence. None of the patient variables predicted the CI of healthy partners or their offspring. We found an association between the CI of the healthy partner and the children.

Conclusions

These findings suggest that MS patients’ emotional and neuropsychological functions are associated with their ability to cope with the disease. These should be carefully assessed at the beginning of treatment so that those factors known to negatively influence patient coping are targeted in the treatment plan if necessary. Comprehensive care of a patient with MS should include support of coping abilities of the family members.

Influences on cognition by immunosuppression and immunomodulation in multiple sclerosis

Cognitive impairment is common also in early stages of MS, but only little is known about its relationship to standard immunotherapeutic drugs. Present data suggest that both immunosuppressive as well as immunomodulatory therapy prevent or delay the onset and severity of cognitive impairment although reversible cognitive deficits can occur.

Diagnostics of cognitive dysfunctions in multiple sclerosis

Cognitive dysfunctions are frequent symptoms in multiple sclerosis (MS). Up to 65% of MS patients suffer from cognitive dysfunctions. Especially memory, attention and executive functions are impaired. These problems strongly affect the patients' ability to work and their quality of life (QoL). A differentiating diagnostic effort is necessary to control fatigue and depression. Screening tools alone can not provide a detailed description of all cognitive domains. Therefore, an elaborated neuropsychological diagnostics is necessary. This report provides a description of cognitive functions and its diagnostic opportunities, especially in MS patients. After displaying aspects of differential diagnostics, a recommendation for a diagnostic work schedule is given.

Fatigue in multiple sclerosis: relation to depression, physical impairment, personality and action control

Athough fatigue is one of the most common symptoms of multiple sclerosis, it is yet poorly understood and therefore difficult to manage. To clarify the nature of fatigue we investigated its relationship to depression, physical impairment, personality and action control and compared these variables between a sample of 41 MS patients and 41 healthy controls. Physical impairment was assessed by the EDSS and all other dimensions, using questionnaires. Stepwise linear regression analyses revealed that physical impairment was related to physical fatigue in MS patients. Depression was the main factor influencing fatigue among both, MS patients and controls. What clearly differentiated the two groups was the correlation between fatigue and action control. Decreased levels of action control imply attentional and motivational deficits and were only found in fatigued MS patients. Our study indicates that motivational disturbances might be specific for MS related fatigue. Multiple Sclerosis 2007; 13: 1161—1167. http://msj.sagepub.com

[Effects of high-dose cortisone therapy on cognition]

Treatment with high-dose corticosteroids over 3-5 days reduces the duration and severity of relapses in patients with multiple sclerosis. Since the benefit of this treatment appears to be dose-dependent, application of ultrahigh steroid doses becomes important. On the other hand, data from basic research and clinical studies indicate potential side effects on mnestic functions. Three recently published studies show that treatment with pulsed corticosteroids induces reversible impaired memory. The effects were independent of the dose administered.