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Liver Transplantation and Hepatobiliary Unit, Royal Free Hospital, London, UK.
Pruritus is often the most troublesome symptom in patients with chronic liver disease, particularly when cholestasis is a prominent feature. The exact pathogenesis is unknown, but empirical treatment, such as cholestyramine, based on a liver-based origin of pruritus, has been used for many years. Recently, evidence for a central mechanism for pruritus has been obtained and opioid antagonists have been tried clinically with some benefit, but their use is not widespread. In addition, the pruritus associated with intrahepatic cholestasis of pregnancy can now be alleviated in many cases by ursodeoxycholic acid. As it also improves foetal outcome, this should become first-line therapy. We review the pathogenesis and therapy of pruritus, highlighting practical aspects to help with patients with seemingly intractable pruritus.
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