Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0015672 (fatigue)
 51,768 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A 38-year-old layer of parquet flooring was referred because of memory impairment, tiredness and diffuse headaches. His work involved using several neurotoxic organic solvents. Extensive laboratory, neuropsychological, clinical neurophysiological, neuroadiological, magnetic resonance (MR) imaging and spectroscopy studies were performed. The neuropsychological and behavioural assessments showed an organic brain syndrome. MR imaging and CT scanning of the brain revealed enlarged ventricles and generalized atrophy. 31P and 1H MR spectroscopic measurements did not show any abnormalities. Owing to recent improvements regarding sensitivity and facilitated assignment, MR spectroscopy may provide in the near future significant additional information on brain metabolism in patients with brain dysfunction presumably induced by organic solvents.
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PMID:Magnetic resonance studies on brain dysfunction induced by organic solvents. 144 99

A 50-year-old man is described who had a 15-year history of Raynaud's phenomenon with severe and frequent vasospastic attacks in his fingers and toes during the past years. Exacerbation of his digital symptoms, which started about 4 years ago, was accompanied by signs of thyroid deficiency, such as tiredness, memory impairment, decreased libido, constipation, dryness of skin and bradycardia. Hormonal evaluation revealed primary hypothyroidism and the patient began substitution therapy with L-thyroxine. After 2 months of treatment not only did he become euthyroid but the digital symptoms also disappeared. The patient may thus represent one of the very few cases whose thyroid replacement therapy proved to be highly effective in treating both hypothyroidism and Raynaud's phenomenon.
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PMID:Remission of Raynaud's phenomenon after L-thyroxine therapy in a patient with hypothyroidism. 156 Jan 91

This study attempted to evaluate the validity of self-reports of memory deficits in narcoleptics by comparing the scores of these patients with the scores of matched control subjects on standardized tests of memory function. After completing a short interview designed to elicit qualitative information about memory difficulties, 30 narcoleptic subjects and 30 control subjects completed the Wechsler Memory Scale (WMS), Rey-Auditory Verbal Learning Test, the Rey Complex Figure Test, Strub and Black's List of Letters, and the Symbol Digits Modalities Test (SDMT). In addition, the Profile of Mood States (POMS) was used to detect variation in performance due to anxiety or fatigue. Continuous polygraphic recordings were obtained during the testing to detect any changes in alertness. Subjects with narcolepsy experienced more difficulty in maintaining attention than control subjects, as evidenced by significantly more perseveration errors (p less than or equal to 0.01) on Strub and Black's List of Letters. Despite differences in their ability to sustain attention, there were no significant differences between narcoleptic and control subjects on measures of concentration (Digit Span from the WMS, and the SDMT). Furthermore, there was no objective evidence of memory impairment when the scores of narcoleptic and control subjects were compared on standardized tests of immediate and delayed recall, as well as on tests of verbal and visual memory.
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PMID:Tests of memory in narcoleptics. 230 68

A prospective study of 120 patients newly diagnosed as having Hodgkin's disease and non-Hodgkin's lymphoma was conducted to determine the nature, extent, and timing of the psychiatric and social morbidity associated with the diagnosis and treatment. Patients were interviewed at diagnosis and two, six, and 12 months later by trained interviewers using standardised questionnaires. Psychiatric morbidity was greatest in the three months before treatment, but new episodes of anxiety and depression developed throughout the year of follow up. Altogether 39 patients suffered a depressive illness or anxiety state, or both, and a further 37 experienced borderline anxiety or depression, or both, during the 15 months of assessment. The most common adverse effects of treatment were hair loss, nausea, vomiting, sore mouth, and changes in perception of taste. Toxicity of treatment was associated with psychiatric morbidity. Conditioned responses to chemotherapy were experienced by 32 patients. Social morbidity was low, although difficulties in returning to work and to previous levels of leisure activity were noted. Although most patients were no longer receiving treatment and were free of disease at the one year follow up, 51 patients continued to complain of loss of energy, 24 of loss of libido, 38 of tiredness, 23 of irritability, 18 of poor concentration, and 23 of memory impairment. These results confirm our retrospective study and suggest that a high price is paid for long term survival by a substantial proportion of patients receiving treatment for Hodgkin's disease and non-Hodgkin's lymphoma.
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PMID:Psychological problems associated with diagnosis and treatment of lymphomas. II: Prospective study. 311 24

Orbital venous vasculitis has been suggested to cause characteristic periorbital pain in patients with pathologic changes in their orbital phlebograms. The orbital pain is characterized by being unilateral, not shifting side, boring and pressing, but not throbbing, increasing on eye strain, exposure to cold, or weather changes, and resistant to analgesics. It is ameliorated by steroids. Fifty patients with symptoms of orbital venous vasculitis were investigated for other symptoms that could be related to the vasculitis. When the 32 female patients were compared with a randomly selected age- and sex-matched control group, there was a significant increase of symptoms of chronic fatigue, cold feet, gut problems such as constipation and/or diarrhea, arthralgia, memory impairment, rotatory vertigo, spontaneous ecchymoses (all, p less than 0.0001), back pain (p less than 0.012), and thrombophlebitis (p less than 0.022) in the patient group. These symptoms, although commonly occurring, seem in these patients to be related to the vasculitis. Blood tests of the fifty patients showed signs of inflammation which did not disagree with the hypothesis of an immunologic cause of the orbital venous vasculitis.
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PMID:Systemic symptoms associated with orbital venous vasculitis. 321 27

A cohort of manic-depressive patients given prophylactic lithium treatment were examined before treatment started and at intervals during treatment for up to 7 years. The mean lithium dosage was 23.2 mmol/d and the mean serum lithium concentration 0.68 mmol/l. About 40% of the patients were entirely free of side effects, as compared with 10% among patients treated previously with higher lithium doses and serum lithium concentrations. Tremor complaints were presented by 5% of the patients before and by 15% during lithium treatment. The frequency fell with continued treatment, and after a few years it was not higher than before treatment started. Tremor complaints were positively correlated with age and with the use of neuroleptics and antidepressants. The tremorigenic effects of lithium and antidepressants seemed to potentiate each other. Tremor complaints were more frequent at serum lithium levels over than under 0.7 mmol/l. Body weight increased during the first 1-2 years of lithium treatment and then remained constant. The average gain was 4 kg. Weight gain was positively correlated with the patients' body weight before treatment and with the concurrent administration of antidepressant drugs. The frequency of diarrhea complaints (loose stools, defecation urge) rose from 1% to 6% during the first 6 months of lithium treatment and then leveled off. The frequency rose steeply at serum lithium values over 0.8 mmol/l. During lithium administration about one tenth of the patients had psychological complaints, which might or might not have been caused by the treatment: memory impairment and concentrating difficulty, tiredness and "greyness of life", in a few cases altered taste or lowered libido and potency.
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PMID:Prospective studies on a lithium cohort. 3. Tremor, weight gain, diarrhea, psychological complaints. 322 63

Six divers were compressed on heliox to 350 m. Repeated neuropsychological and neurological tests were conducted during the dive. Averaged increased tremor during the compression was found. Two divers had major EEG changes, while two divers had a completely normal EEG. Memory was most impaired among the cognitive variables. At 350 m there was some normalization in the EEG, and the tremor levels returned to normal. Memory impairment, however, was sustained. Three months later nine divers performed an open sea dive to 300 m. Whereas minor fatigue effects were found for the experimental dive, examinations after the open sea dive indicated more specific cerebral after effects. An increased tremor, reduced hand grip strength and foot tapping speed, lowered autonomic reactivity, and memory problems were found. Some divers had unequivocal asymmetrical plantar responses and unilateral weak abdominal reflexes, accompanied by EEG changes with corresponding laterality. In three of the divers these signs were not present 1 month later.
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PMID:Differential neuropsychological effects of diving to 350 meters. 382 92

Symptoms of memory impairment are often reported following neurotoxicant exposure. Untoward effects on the developing organism, potentially reflected as later learning disabilities and memory problems, deserve critical evaluation. Animal models providing rigorous experimental control are extremely important in this context. The psychological literature offers a variety of tasks and procedures for use across many developmental ages. Most recent progress has demonstrated evidence of associative capacity in infrahumans as early as birth, and under specific conditions even prenatally. Common to all assessments of learning and memory capabilities, however, is the requisite that these processes be inferred from overt behavior. This requirement confers the responsibility of differentiating alterations of an associative nature from those of a nonassociative nature (e.g., motivation, attention, perception, sensory adaptation, fatigue, activity, and reactivity, etc.). When across age comparisons are also of interest, additional attention must be paid to potential differences in available sensory processes, response repertoire, and ecologically relevant contextual determinants (e.g., ambient temperature, presence of familiar odors or conspecifics), particularly with preweanling and neonatal animals. Specific guidelines are offered for the criteria and implementation of controls typically necessary to provide a convincing demonstration of an associative impairment.
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PMID:Conceptual and procedural considerations for developmental assessment of learning and memory (dys)function following neurotoxicant exposure. 383 70

A wide range of neuropsychiatric side effects are attributed to propranolol including visual hallucinations, somnulence, memory impairment, decrease in response time, dizziness, confusional states, insomnia, nightmares, fatigue, sedation and depression. Benson et al., in a summary review of several clinical studies of 5,846 patients being treated with a variety of beta adrenergic blocking agents, listed depression as a rare side effect of propranolol that was usually reported only after long term treatment at high doses. Despite the widely circulated attribution that depression is a side effect of propranolol, there is a paucity of evidence to directly link this drug with clinically significant mood disturbance. For example, the most widely quoted reference attributing propranolol as a depressogenic agent was a "letter to the editor" which was a retrospective, uncontrolled, unblinded study that did not use a standardized depression rating scale. Most of the evidence linking propranolol to depressive symptoms have derived from scattered case reports in which the onset of depressive symptoms were attributed to this agent. Given the well known cyclic onset and remissions of affective disorders, and the prevalence of depression in the general medical population as a whole, the role of propranolol in these cases is debatable.
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PMID:Propranolol and depression: a reevaluation based on a pilot clinical trial. 640 May 97

Neurotoxic volatile organic solvents used by house and car painters may lead to professional toxic encephalopathy after several years of exposure. The symptoms are memory impairment, fatigue, personality changes, headache and dizziness. Vestibular dysfunction was found in 55% of 113 painters examined, mainly in the form of reduced caloric vestibular reactions. No correlation between vestibular dysfunction and the duration of exposure, cerebral atrophy or intellectual impairment could be demonstrated. Vestibular examination may be helpful in detecting early changes in exposed persons and in determining more accurate safety limits for harmful chemicals.
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PMID:Vestibular dysfunction in occupational chronic solvent intoxication. 697 23


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