1. Cystitis - acute  (Trust Mark: Doctor-Reviewed)
Acute cystitis is a bacterial infection of the bladder or lower urinary tract. Acute means sudden or severe. See also: Cystitis - recurrent; Cystitis - noninfectious; Interstitial cystitis; Urinary tract infection.• Reviewer: Linda Vorvick, MD, Seattle Site Coordinator, Lecturer, Pathophysiology, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

2. Cystitis - noninfectious  (Trust Mark: Doctor-Reviewed)
Noninfectious cystitis is irritation of the bladder that is not caused by a urinary tract infection.• Reviewer: Marc A. Greenstein, D.O., F.A.C.O.S. Urologist, Somerset Medical Center in Somerville, NJ. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.