Clinical trial at kidney dialysis centres  in Brazil, with positive findings, on 20 patients with moderate to  severe itching of the skin. Approximately half of the patients were  randomly allocated to receive homeopathy; the others received dummy  medicine (placebo). They did not know which treatment group they were  in. During a period of 2 months, the itching became less severe in the  homeopathy group but not in the placebo group. More patients responded  to treatment with homeopathy than to placebo, though the only  statistically significant difference was at 1 month.

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