CUA guideline: Diagnosis and treatment of interstitial cystitis/bladder pain syndrome

The following guidelines were based on MEDLINE and PUBMED searches of English language literature, in addition to consensus conference proceedings. Levels of evidence and grades of recommendation were assigned for each investigation and treatment, as per the modified Oxford Centre for Evidence-Based Medicine grading system. Where the literature was inconsistent or scarce, a consensus expert opinion was generated to provide treatment guidelines.