Acute bacterial prostatitis occurs spontaneously in young men but is associated with indwelling catheters in older men. Pts have fever, chills, dysuria, and a tense or boggy, tender prostate. Prostatic massage can cause bacteremia and should be avoided. Gram's staining and culture of urine identify the etiologic agent. E. coli or Klebsiella causes most non-catheter-associated cases, while catheter-associated cases are caused by a broader spectrum of pathogens. Third-generation cephalosporins, fluoroquinolones, or aminoglycosides are efficacious.