General kidney infection secondary to lower urinary tract infection, because the blood supply of renal rich and flushing effect of urine, normal kidney has a strong resistance to infection, urinary tract infection and most asymptomatic bacteriuria do not develop kidney and upper urinary tract infection. Through effective antibiotic treatment and the most mature renal acute renal infection can better recovery, and will not leave scars or kidney damage. But there are predisposing factors, more prone to kidney infection, and the infection occurred after kidney treatment more difficult, and easily lead to acute or chronic complications.

Renal infection is more serious, to regular treatment, symptoms of renal infection is mainly lumbago, frequent micturition, urethral irritation, burning when urinating urethra.