Interstitial Cystitis Guidelines

Updated: Dec 04, 2020
  • Author: Eric S Rovner, MD; Chief Editor: Edward David Kim, MD, FACS  more...
  • Print

Guidelines Summary

Guidelines of the diagnosis and management of interstitial cystitis/bladder pain syndrome (IC/BPS) have been issued by the following organizations:

  • American Urological Association (AUA)
  • Canadian Urologica Association (CUA)

The AUA evidence-based guidelines were initially published in 2011 and subsequently amended in 2014. [3] The Canadian Urological Association issued its evidenced-based guideline in 2016. [4]


Tha AUA recommendations for diagnosis are as follows [3] :

  • A basic assessment that includes history, physical examination, and laboratory testing should be conducted both to confirm the presence of symptoms characteristic of IC/BPS and to rule out other conditions
  • Baseline voiding symptoms and pain levels should be documented, for use in assessment of response to treatment
  • Cystoscopy and/or urodynamics should not be used routinely but should be considered for complex presentations

The CUA recommendations are in agreement with AUA that all evauations should begin with history, physical examination, and laboratory testing and that baseline voiding and pain levels should be used to track response to treatment. However, the CUA recommends that cystoscopy be performed for most patients, to do the following [4] :

  • Rule out bladder cancer/carcinoma in situ
  • Identify Hunner lesions
  • Determine the effect of bladder filling and emptying on pelvic pain
  • Evaluate functional bladder capacity
  • Facilitate pelvic examination
  • Reassure the patient

The CUA considers cystoscopy optional only for young women with symptoms of IC/BPS but no risk factors for bladder cancer or other pelvic conditions. [4]

Additional CUA recommendations include the following [4] :

  • Ultrasound and/or other pelvic imaging is optional to rule out alternative clinical disorders, required for patients with hematuria
  • Optional intravesical anesthetic bladder challenge testing after cystoscopy to provide both relief to the patient, as well as provide diagnostic information and guide future therapy
  • Hydrodistension in select patients such as women unable to tolerate cystoscopy under local anesthesia

The AUA and CUA guidelines agree that urodynamics and bladder biopsy should not be used in routine care. Both guidelines recommend against potassium sensitivity diagnostic testing. [3, 4]


Both guidelines offer treatment algorithms that begin with conservative management and progress to less conservative therapies if symptoms are not adquately controlled. [3, 4]

Overall management

Key AUA guideline recommendations for disease management include the following [3] :

  • Consider surgical treatments (other than fulguration of Hunner lesions) only after other treatment alternatives have been exhausted, or in the rare instance when an end-stage, small, fibrotic bladder has been confirmed and the patient's quality of life suggests a positive risk-benefit ratio for major surgery
  • Initial treatment type and level should depend on symptom severity, clinician judgment, and patient preferences
  • Multiple, simultaneous treatments may be considered if that is in the best interests of the patient
  • Baseline symptom assessment and regular re-assessment are required to gauge the efficacy of single and combined treatments
  • Treatments that fail to demonstrate efficacy should be stopped once a clinically meaningful interval has elapsed
  • Pain management should be continually assessed because of its importance to quality of life; if pain management is inadequate, consideration should be given to a multidisciplinary approach and the patient referred appropriately
  • The IC/BPS diagnosis should be reconsidered if no improvement occurs after multiple treatment approaches

Treatments that may be offered

The AUA guidelines divides treatments that can be offered into first-, second-, third, fourth-, fifth-, and sixth-line groups, based on the balance between potential benefits to the patient, potential severity of adverse events, and the reversibility of the treatment. [3] While the CUA guidelines are in general agreement regarding first-line treatment, subsequent treatments are not characterized in a detailed hierarchy. [4]

First-line treatments should be performed on all patients and include the following [3, 4] :

  • Patient education 
  • Self-care practices and behavioral modifications that can improve symptoms 
  • Stress management practices to improve coping techniques and manage stress-induced symptom exacerbations. 

In addition, the CUA recommends dietary restrictions of common food triggers for a period of 1 week to 3 months, with re-introduction of one item at a time and a waiting period of 3 days to identify potential offenders [4]

AUA second-line treatment recommentations include the following [3] :

  • Appropriate manual physical therapy techniques should be offered, if trained clinicians are available; however, pelvic floor strengthening exercises (eg, Kegel exercises) should be avoided
  • Multimodal pain management 
  • Amitriptyline, cimetidine, hydroxyzine, or pentosan polysulfate (PPS)
  • Dimethyl sulfoxide (DMSO), heparin, or lidocaine

CUA guidelines recommend pelvic floor physiotherapy for patients with pelvic floor muscle dysfunction (PFD). Massage, acupuncture, and trigger point injections are optional for patients with pelvic floor tenderness. 

The CUA recommends amitriptyline, cimetidine, hydroxyzine, or PSS as options after conservative therapies have failed, but notes that there is conflicting evidence of the effectiveness of PPS and expected benefits may be marginal in the majority of patients. In addition, CUA recommends gabapentin and quercetin, although evidence is weak. [4]

The CUA guidelines concur with the recommendations for DMSO, heparin and lidocaine. [4]

AUA third-line treatment recommentations include the following [3] :

  • Cystoscopy under anesthesia with short-duration, low-pressure hydrodistension 
  • If Hunner lesions are present, fulguration (with laser or electrocautery) and/or injection of triamcinolone 

AUA fourth-line treatment recommentations include the following [3] :

  • Intradetrusor botulinum toxin A (BTX-A); post-treatment intermittent self-catheterization may be required
  • A trial of neurostimulation may be performed and, if successful, implantation of permanent neurostimulation devices 

Overall, CUA guidelines concur with the AUA third- and fourth-line treatment recommendations. The guidelines do note that sacral neuromodulation (SNM) is not yet approved by Health Canada or the US Food and Drug Administration (FDA) for the treatment of IC/BPS, but is indicated for urgency frequency syndrome and urgency urinary incontinence. [4]

Cyclosporine is recommended by AUA as a fifth-line treatment [3] . CUA guidelines agree that due to its adverse side effects, cyclosporine should be considered a last resort in patients with inflammation and refractory disease. Close monitoring, including measurement of blood pressure, creatinine, and cyclosporine levels, is required. [4]

According to AUA, major surgery (eg, substitution cystoplasty, urinary diversion with or without cystectomy) is a sixth-line treatment for carefully selected patients for whom all other therapies have failed to provide adequate symptom control and quality of life. [3]  After weighing the invasiveness of surgery, the benign nature of IC/BPS, and multiple other treatment options available, the CUA concluded that major surgery should only be considered as an absolute last resort. [4]  

Treatments that should not be offered

The AUA recommends against the following treatments, due to a lack of evidence of efficacy, unacceptable adverse event profiles, or both [3] :

  • Long-term oral antibiotic administration 
  • Intravesical instillation of bacillus Calmette-Guerin (BCG) outside of clinical studies
  • High-pressure, long-duration hydrodistension 
  • Systemic long-term glucocorticoid administration