Cognitive dysfunction and mental fatigue in childhood chronic fatigue syndrome–a 6-month follow-up study

Abstract:

OBJECTIVES: Cognitive function was investigated in patients with childhood type chronic fatigue syndrome (CCFS) using the modified advanced trail making test (mATMT).

METHODS: mATMT was performed on 19 patients with CCFS and 25 healthy controls of comparable age and sex. The effectiveness of combined treatment with cognitive behavioral therapy (CBT) and pharmacotherapy and its relationship to cognitive function was investigated by evaluation of Chalder’s fatigue scale and behavior state before and after treatment for 6 consecutive months.

RESULTS: All three tasks (motor skill, selective and alternative attention, and spatial working memory) of the mATMT, especially the difference in reaction time of the alternative attention task, could discriminate CCFS patients from control subjects with 70.5% accuracy (P=0.007). CCFS patients showed significantly lower alternative attention and Chalder’s fatigue score before treatment (P=0.037 and 0.002, respectively). A significant improvement in performance status scores was found during the 6 months follow-up period with combined treatment with CBT and medication (P<0.001). Improvement of their cognitive symptoms was significantly correlated with improvement of alternative attention (r=0.653, P=0.002).

CONCLUSIONS: Higher-order level cognitive dysfunction affects CCFS pathogenesis. Alternative attention performance evaluated by the mATMT may be used to monitor improvement in patients with CCFS. Combined treatment with CBT and medication may be effective to improve poor attention characteristics associated with CCFS.

Copyright © 2011 The Japanese Society of Child Neurology. Published by Elsevier B.V. All rights reserved.

 

Source: Kawatani J, Mizuno K, Shiraishi S, Takao M, Joudoi T, Fukuda S, Watanabe Y, Tomoda A. Cognitive dysfunction and mental fatigue in childhood chronic fatigue syndrome–a 6-month follow-up study. Brain Dev. 2011 Nov;33(10):832-41. doi: 10.1016/j.braindev.2010.12.009. Epub 2011 May 6. https://www.ncbi.nlm.nih.gov/pubmed/21530119

 

Chronic fatigue syndrome: is there a role for non-antidepressant pharmacotherapy?

Abstract:

IMPORTANCE OF THE FIELD: Chronic fatigue syndrome (CFS) is a prevalent but poorly understood condition mainly characterized by debilitating, persistent or recurrent fatigue; increased physical and mental fatigability; cognitive impairment and widespread musculoskeletal pain. Despite intensive treatment research, the role of pharmacotherapy in the illness remains uncertain.

: An updated review is given of pharmacotherapy in CFS, with a focus on non-antidepressant, controlled drug trials performed between 1988 and August 2009.

WHAT THE READER WILL GAIN: Antiviral, immunological and antibiotic therapies, although sometimes associated with symptom amelioration, can be more harmful than beneficial in CFS. Stimulants seem to benefit some CFS patients but their long-term effects is uncertain. Although antidepressants are not curative for the illness, they might be useful for some symptomatic aspects and co-morbid anxiety and depression. There is little or no evidence that CFS patients benefit from other pharmacological agents (e.g., steroids) or from dietary supplements and complementary medicine products. Future research into treatment should take specific subgroups into account and should target immunological aspects of the illness as well as the complex relationships between CFS, stress and depression.

TAKE HOME MESSAGE: Pharmacotherapy can currently not be considered first-line treatment in CFS and should always be used in a context of self-management and rehabilitation.

 

Source: Van Houdenhove B, Pae CU, Luyten P. Chronic fatigue syndrome: is there a role for non-antidepressant pharmacotherapy? Expert Opin Pharmacother. 2010 Feb;11(2):215-23. Doi: 10.1517/14656560903487744. https://www.ncbi.nlm.nih.gov/pubmed/20088743

 

Pharmacological treatment of chronic fatigue syndrome: focusing on the role of antidepressants

Abstract:

Chronic fatigue syndrome (CFS) is characterized by chronic, medically unexplained fatigue associated with effort- and stress-intolerance, widespread pain, and impairment in sleep and concentration. Although this constellation of symptoms is highly prevalent in clinical practice, the pathophysiological mechanisms underlying CFS are poorly understood. Current evidence indicates similarities in symptomatology, and possibly etiology and pathogenesis, between CFS and depression. Additionally, there is significant overlap between CFS and the syndrome of fibromyalgia for which antidepressants have shown consistent efficacy.

Data regarding antidepressant treatment of CFS is less copious and less uniformly positive, such that antidepressant use in CFS remains controversial. The current review aims to summarize available data related to antidepressants and other psychotropic agents in CFS to provide a platform for clinicians to make decisions in their treatment of this challenging syndrome.

We identified relevant studies through a PubMed literature search with a combination of the following search terms: ‘fatigue,’ ‘depression,’ ‘antidepressant,’ ‘etiology’ (e.g., ‘neurobiology,’ ‘neurotransmitter,’ ‘genetic’), ‘diagnosis,’ and ‘treatment’ (e.g., ‘antidepressant’ plus the specific name). In addition, studies were also identified via the reference sections of retrieved articles. The authors thoroughly reviewed major findings from the scanned literatures and eventually synthesized them, providing summary, interpretation, and future directions.

 

Source: Pae CU, Marks DM, Patkar AA, Masand PS, Luyten P, Serretti A. Pharmacological treatment of chronic fatigue syndrome: focusing on the role of antidepressants. Expert Opin Pharmacother. 2009 Jul;10(10):1561-70. Doi: 10.1517/14656560902988510. https://www.ncbi.nlm.nih.gov/pubmed/19514866

 

Therapeutic guidelines in chronic fatigue syndrome

Abstract:

The treatment of CFS is not definitive up till now and it is limited both by ignorance of its causes and by different applicable operative case definitions. It has been etiopathologically related to infectious agents, neuromuscular illnesses, neuro-endocrinous-immunologic alterations and to different psychiatric disorders, particularly depressive disorders. Consequently, a great variety of therapeutic strategies have been tried, most of them with insufficient results. Among the medicamentous ones: immunity activator agents such as recombinant interleukin-2, nonspecific immunitary modulators such as seric gamma globulin, antivirus drugs such as acyclovir, muscular relaxants such as ciclobenzaprine, H2 receptor blockers and steroid and nonsteroid anti-inflammatory drugs such as ibuprofen, naproxen and fulbiprofen. Better results seem to have been obtained with antidepressants, and amfebutamone and serotonin-reuptake selective inhibitors are specially promising. Among the nonmedicamentous strategies, cognitive behavioural treatment can be effective and the so called “psychiatric management of the patient with CFS” has been proposed as a global, pragmatic, individualized, comprehensive approach which must be completed with other interdisciplinary interventions on the patient and his environment.

 

Source: Bertolín Guillén JM, Bedate Villar J. Therapeutic guidelines in chronic fatigue syndrome. Actas Luso Esp Neurol Psiquiatr Cienc Afines. 1994 May-Jun;22(3):127-30. [Article in Spanish] http://www.ncbi.nlm.nih.gov/pubmed/7484295

 

Pharmacological approaches to the therapy of chronic fatigue syndrome

Abstract:

Although a variety of pharmacological agents have been used to treat patients with chronic fatigue syndrome none has been shown to effect a complete resolution of symptoms.

Data obtained from a retrospective study and from an objective assessment of the aerobic work capacity of patients with this disorder suggest that the underlying pathophysiological abnormality is a disorder of sleep regulation. This results not only in profound fatigue and lethargy but also reduced sensory threshold for pain, disordered temperature regulation, cardiovascular abnormalities, disturbed higher cerebral function and mental depression.

Drugs which modulate sleep, such as tricyclic antidepressants, have a limited effect in improving the symptoms that CFS patients experience. We suggest that other agents which affect central nervous system neurotransmitters, particularly serotonin, may have potential in the management of this condition and need to be evaluated in large controlled clinical trials.

 

Source: McCluskey DR. Pharmacological approaches to the therapy of chronic fatigue syndrome. Ciba Found Symp. 1993;173:280-7; discussion 287-97. http://www.ncbi.nlm.nih.gov/pubmed/8491103