Unexplained fever and chronic fatigue: abnormal circadian temperature pattern

Abstract:

OBJECTIVES: Standard clinical and biological investigations can be used to determine the origin of persistent and moderate fever in a large number of otherwise asymptomatic patients. However, in a small proportion of cases, isolated fever and fatigue persist despite the absence of detectable organic malfunction. This study was conducted to investigate the circadian thermic pattern in patients with apparently unexplainable fever and chronic fatigue and in those with fever of recognized origin.

METHODS: We recorded central temperature continuously for 24 hours in patients with moderate fever of both unexplained and recognized origin, and in a control group of healthy volunteers. A Fourier series was used for harmonic analysis.

RESULTS: Thermic patterns specific to the three groups were identified by statistical and factorial analysis. The patients with fever of unknown origin and chronic fatigue were clearly characterized in terms of the phase, amplitude of the first (fundamental) harmonic and minimum circadian temperature.

CONCLUSION: The abnormal central temperature pattern in these patients may prove to be an important step in the management of febrile patients.

 

Source: Camus F, Henzel D, Janowski M, Raguin G, Leport C, Vildé JL. Unexplained fever and chronic fatigue: abnormal circadian temperature pattern. Eur J Med. 1992 Apr;1(1):30-6. http://www.ncbi.nlm.nih.gov/pubmed/1341974

 

Chronic fatigue syndrome: a joint paediatric-psychiatric approach

Comment in: Chronic fatigue syndrome: a joint paediatric-psychiatric approach. [Arch Dis Child. 1992]

 

Prolonged fatigue after an apparent viral infection, occurring sporadically or as an epidemic, has been described over the past 50 years. It has been given various names including Royal Free disease (1) and myalgic encephalomyelitis, but the preferred terms in the medical literature have been postviral fatigue syndrome (2) or chronic fatigue syndrome (CFS). (3)

However, the validity of this syndrome as a nosological entity has created a good deal of controversy and remains in doubt. (4) A constellation of symptoms make up the syndrome. There is fatigue of defined onset that is generally reported to follow a viral illness, often an influenza-like illness or an infection of the upper respiratory tract. The patient experiences profound fatigue with the initial illness and then fails to make the expected recovery, with fatigue that can persist over months or years. Fatigue is defined as a subjective sensation, which the patient often describes as tiredness or weariness and that occurs at rest. These patients also report a clear relationship of fatigue to activity. The term fatiguability has been used to describe the greater than normal fatigue that occurs after physical and sometimes after mental exertion in these patients. A great variety of associated symptoms have been described that include increased sleepiness, dizziness, vertigo, headache, difficulty in concentrating, sore throat, muscle weakness, and myalgia. The majority of patients have some emotional symptoms. There can be irritability and anxiety, tearfulness and depression. The fatigue and associated symptoms are of such severity as to impair significantly normal daily activities. There is a remarkable absence of physical signs and physical investigations fail to detect any organic pathology or current infection to account for the symptoms.

You can read the rest of this article here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1793327/pdf/archdisch00639-0088.pdf

 

Source: Vereker MI. Chronic fatigue syndrome: a joint paediatric-psychiatric approach. Arch Dis Child. 1992 Apr;67(4):550-5. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1793327/

 

Fluctuations in perceived energy and mood among patients with chronic fatigue syndrome

Abstract:

Patients currently suffering or recently recovered from chronic fatigue syndrome (CFS) were compared with each other and with a group of well-matched controls in a study of diurnal variation in levels of perceived mental and physical energy and positive and negative affect.

Patients who were currently ill showed diurnal variation in patterns of energy, with maximum levels being recorded between 10.00 h and 12.00 h which were significantly higher (P < 0.05) than energy levels recorded on rising or retiring. This pattern was similar to the controls but average energy levels at each time point were lower (P < 0.05) among the ill patients.

Recovered patients showed the same pattern, with mean energy levels falling between those of the ill patients and controls. Similar diurnal patterns were found for perceptions of positive, though not negative affect. Correlations between physical and mental energy and between both of these energy variables and positive affect were high (r = 0.75 to 0.85) in both controls and CFS patients. However, correlations with negative affect were low (eg r = -0.10) and non-significant.

Total scores on the Hospital Anxiety and Depression Scale (HAD) were significantly higher (P < 0.05) among patients who were still ill than those who had recovered. Scores on the HAD Depression (but not Anxiety) subscale were also significantly higher among those who were still ill (P < 0.01). These findings may be of value in facilitating programmes of cognitive-behavioural modification intended to aid the recovery of patients with CFS.

Comment in:

Fluctuations in perceived energy and mood among patients with chronic fatigue syndrome. [J R Soc Med. 1992]

Does atmospheric nitrous oxide (N2O) affect the perception of energy and mood? [J R Soc Med. 1992]

 

Source: Wood C, Magnello ME, Sharpe MC. Fluctuations in perceived energy and mood among patients with chronic fatigue syndrome. J R Soc Med. 1992 Apr;85(4):195-8. http://www.ncbi.nlm.nih.gov/pubmed/1290537

Note: You can read the full article here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1294721/

 

Psychosocial management of chronic fatigue syndrome in adolescence

Abstract:

The state of chronic fatigue syndrome (CFS) as abnormal illness behaviour or as biologically determined disease is undecided. The ensuing, often public, debate has confused the community and has led to sharp differences in the therapeutic approach to individual patients. These challenges are compounded when the patient is an adolescent and intergenerational issues enter the picture. Two adolescent cases with different outcomes are presented and the principles of a rehabilitation approach to treatment are outlined which attempt to avoid being drawn into unproductive debates about aetiology.

Comment in: Chronic fatigue syndrome. [Aust N Z J Psychiatry. 1992]

 

Source: Rikard-Bell CJ, Waters BG. Psychosocial management of chronic fatigue syndrome in adolescence. Aust N Z J Psychiatry. 1992 Mar;26(1):64-72. http://www.ncbi.nlm.nih.gov/pubmed/1580887

 

Chronic tiredness and idiopathic chronic fatigue–a connection?

Abstract:

Evidence is adduced to support the proposal that pathological fatigue is a consequence of impaired capillary blood flow resulting in inadequate oxygen delivery, which is in accordance with physiological concepts of fatigue. Case reports are presented.

Comment in: Chronic fatigue syndrome. [N J Med. 1992]

 

Source: Simpson LO. Chronic tiredness and idiopathic chronic fatigue–a connection? N J Med. 1992 Mar;89(3):211-6. http://www.ncbi.nlm.nih.gov/pubmed/1574202

 

Chronic fatigue syndrome

Abstract:

Fatigue is one of the most common complaints among patients seen in the primary care setting. Chronic fatigue syndrome, which has recently been called chronic fatigue immune dysfunction syndrome, is distinctive, with an abrupt onset of symptoms that wax and wane for at least six months.

Usually there is low-grade fever, pharyngitis and tender, but not enlarged, lymph nodes. The fatigue can be disabling and is often made worse by physical activity. Some patients with this disorder have also been found to have highly characteristic immunologic abnormalities.

Treatment can be rewarding and is based on patient education and support, exercise and symptomatic therapies for abnormal sleep patterns, musculoskeletal pain and other symptoms.

 

Source: Calabrese L, Danao T, Camara E, Wilke W. Chronic fatigue syndrome. Am Fam Physician. 1992 Mar;45(3):1205-13. http://www.ncbi.nlm.nih.gov/pubmed/1543105

 

Studies on the relationship between chronic fatigue syndrome and Epstein-Barr virus in Japan

Abstract:

Among 1,153 consecutive patients, 22 patients (1.9%) who complained of chronic fatigue for a period of over 6 months without detectable causes were studied.

Ten patients (0.86%) satisfied the criteria of chronic fatigue syndrome (CFS) and were classified to be definite cases of CFS. The other patients were classified as probable cases.

In order to clarify the role of Epstein-Barr virus (EBV) as a cause of CFS, we measured various antibodies for EBV. The definite cases had significantly higher titers of early antigen complex (EA)-IgG than both the probable cases and controls.

We proposed the EA-IgG/EBNA ratio as the indicator of activation of EBV and attempted to estimate the degree of fatigue by the EA-IgG/EBNA ratio. The highest ratio value (16.0) of the 22 patients ratios was the most serious case. In general, the ratio correlated with the degree of fatigue. Based on these results, it was concluded that a relationship does exist between CFS and EBV.

 

Source: Kawai K, Kawai A. Studies on the relationship between chronic fatigue syndrome and Epstein-Barr virus in Japan. Intern Med. 1992 Mar;31(3):313-8. http://www.ncbi.nlm.nih.gov/pubmed/1319246

Note: You can access the full text and download it as a PDF file HERE.

 

Chronic fatigue syndrome. A review from the general practice perspective

Abstract:

There is no doubt that the chronic fatigue syndrome exists. It is a condition that is debilitating and of unknown cause. Research into chronic fatigue syndrome demonstrates possible psychiatric or organic causes. The truth may be somewhere in between. Evidence for the existence of an ongoing chronic infection is now not convincing. Treatment should be based on supportive counselling, explanation, psychiatric help (both pharmacological and non pharmacological) and a graded programme of increased activity with the eventual aim of resumption of full functioning.

Comment in: Chronic fatigue syndrome. [Aust Fam Physician. 1993]

 

Source: Holmwood C, Shannon C. Chronic fatigue syndrome. A review from the general practice perspective. Aust Fam Physician. 1992 Mar;21(3):278-9, 283-5. http://www.ncbi.nlm.nih.gov/pubmed/1318714

 

Epstein-Barr virus serology in the chronic fatigue syndrome

Abstract:

The antibody profiles against Epstein-Barr virus were studied in 136 patients presenting with chronic fatigue syndromes. These profiles were compared with a panel of sera from blood donors. The patients exhibited higher titres in a combined assay for antibodies to the Restricted (R) and Diffuse (D) components of the Early Antigen complex than controls (P less than 0.001) but titres against these antigens were not useful on an individual patient basis. The patients who displayed elevated titres of antibodies to Early Antigens did not differ clinically from those displaying titres in the control range. Four of nine patients who had increased antibodies to Early Antigens also had evidence of active enterovirus infection.

 

Source: Woodward CG, Cox RA. Epstein-Barr virus serology in the chronic fatigue syndrome. J Infect. 1992 Mar;24(2):133-9. http://www.ncbi.nlm.nih.gov/pubmed/1314860

 

Neuropsychological and psychiatric abnormalities in myalgic encephalomyelitis: a preliminary report

Abstract:

Ten patients attending one general medical hospital clinic who fulfilled operational criteria for the diagnosis of myalgic encephalomyelitis (ME) and with a history longer than three months, underwent a series of standardized neuropsychological and psychiatric tests. Nine were able to complete the tests and were individually matched with a normal control group for age, sex, educational background and premorbid intelligence. The ME subjects showed inferior performance to the controls on two tests of verbal memory. Their personality scores displayed less extraversion and less psychoticism. This is the first report of objective neuropsychological abnormalities in patients with ME, suggesting a discrete deterioration of short-term memory. The findings may also suggest a concurrent psychiatric component of the condition, but the direction of causality remains to be clarified.

 

Source: Riccio M, Thompson C, Wilson B, Morgan DJ, Lant AF. Neuropsychological and psychiatric abnormalities in myalgic encephalomyelitis: a preliminary report. Br J Clin Psychol. 1992 Feb;31 ( Pt 1):111-20. http://www.ncbi.nlm.nih.gov/pubmed/1559114