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C F S  - Information International     
 

Fatigue  and  CFS/ FM

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What is Fatigue ?

A comprehensive review of fatigue in neurological disorders, definitely worth a read, chaudhuri.behan.04.txt, chaudhuri.behan04.txt, chaudhuri.behan04.pdf.  Fatigue is a well-known phenomenon in both central and peripheral neurological disorders, zwarts.etal07.txt, zwarts.etal07.pdf.

 

Enigma of Fatigue

The enigma of fatigue has been named "the black hole of medicine",  Eidelman, 2003,   Eidelman, 2003 (pdf).  Regional prevalence of fatiguing illnesses in the US before and after the terrorist attacks of Sep. 11, 2001, heim.etal04.txt, heim.etal04.pdf.
 

Central Fatigue in CFS/ FM

An increasing number of studies document central fatigue in CFS (as opposed to peripheral/muscle fatigue),  Georgiades et al., 2003.  Weight, BMI is not correlated with fatigue in CFS, schur.etal07.txt, schur.etal07.pdf.
 

 

Rating of Fatigue

Dr. Jason's group has studied ways of rating fatigue, comparing the Fatigue Scale and the Fatigue Severity Scale,  Taylor et al., 2000,  and  Friedberg & Jason, 2003.  A study found diurnal rhythmicity in pain, stiffness, and fatigue in patients with fibromyalgia, bellamy.etal04.txt.

 

The assessment of fatigue - A practical guide for clinicians and researchers, dittner.etal04.txt, dittner.etal04.pdf.
A study compares different ratings of fatigue, naschitz.etal04.txt. The wording of fatigue used by CFS-sufferers indicate a difference compared to healthy individuals, libman.etal07.txt, libman.etal07.pdf.

 

The instrument(s) used to measure fatigue: Fatigue after brain injury: initial reliability study of the BNI Fatigue Scale, borgaro.etal04.txt.

 

Post-exertional Fatigue

Many studies have stressed the importance of PE-malaise, including my own study, andersen.etal07.txt, andersen.etal07.pdf. One exercise test is not enough to test for PE-malaise, vanNess.etal07.txt, vanNess.etal07.pdf.

 

Testing for fatigue has important implications: the legal and scientific bases on which an exercise stress test can provide medically acceptable evidence of disability for the CFS patient, ciccolella.etal07.txt, ciccolella.etal.07.txt, ciccolella.etal07.pdf.

 

Treating Fatigue

The treatment options for fatigue in FM were reviewed,  Guymer & Clauw, 2002.   The use of a narcolepsy drug Modafinil in CFS,  Cochran, 2001, and in FM,  letter, Schaller & Behar, 2001.  A pilot study recommends dexamphetamine for CFS,  Olson et al., 2002.  Ginseng has no obvious effect on chronic fatigue, hartz.etal04.txt.
 

Fatigue in MS

Many doctors who treat both CFS and Multiple Sclerosis (MS) patients have noticed a similarity between the fatigue described by the two patient categories. MS patients suffer from severe fatigue,  press, MS, fatigue, 2001.  A 2001-study reviews treatment of fatigue in MS,  Comi et al., 2001 (pdf).  One study tests 1-carnitine and amantadine for MS fatigue, thomassini.etal04.txt.  Fatigue in multiple sclerosis: an example of cytokine mediated sickness behaviour?, heesen.etal06.txt. Fatigue in MS: association with disease-related, behavioural and psychosocial factors, trojan.etal07.txt.
 

 

Fatigue in Cancer

Depression, fatigue and cognitive dysfunction are all common symptoms in cancer but poorly understood,  Valentine & Meyers, 2001.  Dutch researchers compared the fatigue in disease-free cancer patients with that of CFS patients,  Servaes et al., 2001. and  Servaes et al., 2002.  Recently Dr. Bennett concluded that CRF appears closely related to CFS. These findings raise the emergent hypothesis of a conserved neurobehavioral symptom complex, which results from diverse triggering insults, bennett.etal07.txt, bennett.etal07.pdf.
 


 


 
 

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Mette Marie Andersen, MD