All are features of haemolytic uremic syndrome, except:

Answer is D (Neuropsychiatric manifestations): Absence of neurological manifestations has been termed as a chracteristic essential diagnoistic feature for HUS in 'nT text. Hyperkalernia is a manifestation of Renal failure and hence appears justified. Essentials of diagnosis as mentioned in CM DT : - Microangiopathic hemolytic anemia - Thrombocytopenia - Renal failure - Elevated serum LDH - Normal coagulation tests - Absence of Neurological abnormality, There are no neurological manifestations other than those due to uraemia - CMDT Neurological symptoms other than those associated with uremia are uncommon - Harrison Neveheless, confusion does prevail as Nelson confuses the issue - Extra renal manifestations may include CNS manifestations - Nelson