What is the cause of oliguria and anuria?

Causes the organism oliguria or the anuria symptom, possibly is the shock, the poisoning dehydration, the massive hemorrhage, the nephrotic syndrome, the lupus nephritis, the pregnancy hypertension sickness, the renal artery embolism kidney front sex reason causes. In addition, urinary tract stones, urethral tumors, prostate hypertrophy, urinary tuberculosis, kidney droop or kidney torsion caused by wandering, neurogenic cystitis and other postrenal causes, the same can cause abnormal urine volume.