Interstitial Cystitis/Painful Bladder Syndrome

Interstitial Cystitis/Painful Bladder Syndrome

Interstitial Cystitis/Painful Bladder Syndrome

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IC/BPS Overview - Bladder's Cry

  • Chronic pelvic pain, pressure, or discomfort perceived to be related to the urinary bladder.
  • Associated with ≥1 urinary symptom (e.g., urgency, frequency).
  • More common in women (9:1 ratio vs men).
  • Etiology: Unknown; ?urothelial dysfunction, mast cell activation, neurogenic inflammation.
  • Diagnosis of exclusion.

⭐ AUA definition: unpleasant sensation (pain, pressure, discomfort) perceived to be related to the urinary bladder, associated with lower urinary tract symptoms of more than 6 weeks duration, in the absence of infection or other identifiable causes.

  • 📌 Mnemonic: Inflamed Cystitis Bothers Patients Severely (IC/BPS).

Pathophysiology - The Bladder Barrier Breach

  • Primary defect: Urothelial barrier dysfunction.
    • Impaired integrity of the bladder lining.
    • Allows noxious urine components to penetrate.
  • Key mechanism:
    • Increased permeability of the urothelium.
    • Potassium ($K^+$) ions and other solutes leak into the submucosa.
  • Resultant inflammation & sensitization:
    • Mast cell activation, releasing histamine & cytokines.
    • Neurogenic inflammation and C-fiber sensitization.
    • Leads to chronic pain, urgency, and frequency. Pathophysiology of Interstitial Cystitis

⭐ Defective urothelial glycosaminoglycan (GAG) layer is a key theory, leading to increased bladder permeability and solute leakage into the interstitium.

Clinical Features - Symptom Spotlight

  • Pain:
    • Chronic (>6 weeks), pelvic; locations: suprapubic, perineal, urethral.
    • Character: pressure, discomfort, or intense.

    ⭐ The hallmark symptom is pain related to bladder filling, often suprapubic or pelvic, which is typically relieved by voiding.

  • Urinary Symptoms:
    • Frequency (often >8/day), urgency (often compelling).
    • Nocturia (often >2/night).
  • Associated:
    • Dyspareunia (common).
    • Worsened by specific dietary triggers (e.g., acidic, spicy).
    • Diagnosis of exclusion (no infection/other pathology).

Diagnosis Decoded - Pinpointing the Pain

IC/BPS is primarily a diagnosis of exclusion.

  • Core Symptoms:
    • Chronic pelvic pain, pressure, or discomfort >6 weeks, perceived to be bladder-related.
    • Accompanied by urinary urgency or frequency.
  • Exclusion is Key:
    • Rule out: Infection (negative urine culture), bladder stones, malignancy, endometriosis, other urologic/gynecologic causes.
  • Key Investigations:
    • Urinalysis & culture: Mandatory.
    • Cystoscopy with hydrodistention:
      • Reveals glomerulations (petechial hemorrhages).
      • Identifies Hunner's lesions.

    ⭐ Hunner's lesions, seen in about 5-10% of patients on cystoscopy with hydrodistention, are specific for IC/BPS and appear as distinct, inflamed, often bleeding areas.

    • Biopsy: If Hunner's lesions or suspicious findings.

Cystoscopic view of healthy bladder vs. Hunner's lesions

Management Matrix - Alleviating Agony

  • Conservative & Behavioral:
    • Diet modification (avoid triggers: caffeine, alcohol, acidic foods)
    • Bladder training, stress management
    • Pelvic floor physical therapy
  • Oral Medications:
    • Amitriptyline (TCA)
    • Hydroxyzine (antihistamine)
    • Pentosan polysulfate sodium (PPS)

    ⭐ Pentosan polysulfate sodium (PPS) is the only FDA-approved oral medication specifically for IC/BPS, thought to replenish the GAG layer.

  • Intravesical Instillations:
    • Dimethyl sulfoxide (DMSO)
    • Heparin, Lidocaine
  • Interventional/Surgical (Refractory):
    • Hydrodistension
    • Botulinum toxin A injection
    • Sacral neuromodulation
    • Urinary diversion/cystectomy (rare)

High‑Yield Points - ⚡ Biggest Takeaways

  • Chronic pelvic pain, pressure, or discomfort related to the bladder, lasting > 6 weeks.
  • Often accompanied by urinary frequency, urgency, and nocturia.
  • A diagnosis of exclusion; rule out infection and other pathologies.
  • Cystoscopy may reveal Hunner's ulcers (classic IC) or glomerulations.
  • Pain on bladder filling, relieved by voiding, is characteristic.
  • Multimodal management: diet, bladder training, amitriptyline, pentosan polysulfate, intravesical therapy.
  • Negative urine culture is essential for diagnosis.

Practice Questions: Interstitial Cystitis/Painful Bladder Syndrome

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Increased permeability in acute inflammation is due to all except?

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Flashcards: Interstitial Cystitis/Painful Bladder Syndrome

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Chronic pelvic pain (CPP) refers to acyclical pelvic pain of more than _____ months duration.

TAP TO REVEAL ANSWER

Chronic pelvic pain (CPP) refers to acyclical pelvic pain of more than _____ months duration.

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Interstitial Cystitis/Painful Bl... - Free Indian Medical PG