<prompt> All are features of the hemolytic uremic syndrome, except -HyperkalemiaAnaemiaRenal microthrombiNeuropsychiatric disturbances  <response>: Hyperkalemia is seen in hemolytic uremic syndrome as a result of renal failure. ABOUT NEUROPSYCHIATRIC MANIFESTATIONSNeurological manifestations are used to distinguish between the Hemolytic uremic syndrome and Thrombotic Thrombocytopenic Purpura.H.U.S. is distinguished from T.T.P by the absence of neurological symptoms and the prominence of acute renal failure.Recent studies, however, have tended to blur these clinical distinctions. Many adult patients with TTP lack one or more of the five criteria and patients with HUS have fewer neurological dysfunction. 