Journal
JOURNAL OF DERMATOLOGY
Volume 29, Issue 10, Pages 621-627Publisher
JAPANESE DERMATOLGICAL ASSOC
DOI: 10.1111/j.1346-8138.2002.tb00191.x
Keywords
uremic priritus; xerosis hemodialysis; dialyzers
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Uremic pruritus is one of the most bothersome symptoms in patients with chronic renal failure. Its pathogenesis remains unclear. The aim of this study was to evaluate the frequency of uremic pruritus in hemodialysis patients and to correlate its presence and intensity with several clinical parameters. One hundred thirty patients on maintenance hemodialysis were included into the study. The intensity of pruritus was assessed by two methods: visual analog scale and specially adapted questionnaire scoring method. A significantly positive correlation (p<0.00001) was demonstrated between the two methods for evaluating pruritus. Uremic pruritus was found in 40.8% of patients. An additional 36.1% of patients reported pruritus to have been present in the past during the renal disease period. Itching was generalized in 19% of patients; the remaining subjects suffered from scattered pruritus (50%) or pruritus in a single location (31%). A significant positive relationship (p<0.02) was demonstrated between the total score of pruritus and duration of the hemodialysis period. Severity of pruritus and sleep disturbance caused by itching also significantly correlated (p<0.05) with the duration of hemodialysis. Patients hemodialysed on polysulphone membranes more commonly suffered from pruritus than those on hemophane (p<0.04) or cuprophane(p<0.03) dialysis membranes. A marked relationship was demonstrated between the intensity of xerosis and prevalence of pruritus. Significantly more patients with very rough skin had pruritus compared to those with rough skin (p<0.05) and those with slightly dry skin (p<0.02). Itching was more common in female patients (p<0.04), but patient age, underlying renal disease and erythropoietin intake did not correlate with the incidence or intensity of pruritus.
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