Description

Radiation cystitis causes painful bladder inflammation after pelvic radiation. Learn how FDA-approved hyperbaric oxygen therapy (HBOT) heals radiation cystitis, reduces hematuria, and restores bladder function.

TLDR

Radiation cystitis affects 23% to 80% of people who receive pelvic radiation therapy, often appearing months or years after treatment ends. Hyperbaric oxygen therapy (HBOT) is an FDA-approved, insurance-covered treatment for delayed radiation injury including radiation cystitis. HBOT delivers 100% medical-grade oxygen at pressure up to 2.4 ATA to drive angiogenesis, restore blood flow, and heal damaged bladder tissue. The RICH-ART randomized controlled trial. The largest trial of its kind. Demonstrated durable improvement in hemorrhagic cystitis symptoms with HBOT. At OxygenWell in Sherman Oaks and Calabasas, we offer physician-owned, safety-first HBOT with personalized protocols for radiation cystitis patients, and we accept Medicare and PPO insurance for this FDA-approved indication.

What Is Radiation Cystitis?

Radiation cystitis is inflammation of your urinary bladder that develops because of radiation therapy to treat cancer in your pelvic area. It is also called radiation-induced cystitis. [Cleveland Clinic](https://my.clevelandclinic.org/health/diseases/radiation-cystitis)

There are two types:

• Acute radiation cystitis: Develops during or shortly after radiation therapy and may improve on its own.
• Delayed (late) radiation cystitis: Develops six months or longer after completing radiation. Sometimes years or even decades later. Late cystitis occurs because radiation causes progressive fibrosis and scar-like tissue buildup in the bladder wall. [Cleveland Clinic](https://my.clevelandclinic.org/health/diseases/radiation-cystitis)

Late radiation cystitis is not rare. Anywhere between 23% and 80% of people who receive pelvic radiation develop some degree of cystitis, depending on dose, field, and technique. [Cleveland Clinic](https://my.clevelandclinic.org/health/diseases/radiation-cystitis) Pelvic cancers treated with radiation include prostate, cervical, uterine, endometrial, bladder, and rectal cancers.

What Are the Symptoms of Radiation Cystitis?

Symptoms range from mild to severe and often worsen over time without treatment:

• Frequent urination and waking multiple times at night to urinate
• Urgent, uncontrollable need to urinate and incontinence
• Pain or burning sensation when urinating (dysuria)
• Bladder muscle spasms
• Reduced bladder capacity. Your bladder cannot hold as much urine
• Blood in your urine (hematuria), which defines hemorrhagic cystitis
• In severe cases: bladder ulcers (Hunner's lesions), fistula, or tissue necrosis [Cleveland Clinic](https://my.clevelandclinic.org/health/diseases/radiation-cystitis)

For some people, radiation cystitis becomes a progressive, long-term condition. You may have no symptoms during radiation itself, then develop problems months or years later. [Cleveland Clinic](https://my.clevelandclinic.org/health/diseases/radiation-cystitis)

What Causes Radiation Cystitis to Persist for Years?

Radiation therapy saves lives, but it also damages healthy microvasculature. This is the classic 3-H model of delayed radiation injury: hypovascular, hypocellular, and hypoxic tissue.

Radiation causes obliterative endarteritis. Small blood vessels narrow and close. The bladder wall becomes poorly perfused, fibrotic, and oxygen-starved. The fragile new vessels that do form bleed easily, which is why hematuria is the hallmark of chronic radiation cystitis.

Hyperbaric oxygen therapy addresses this root biology. By breathing 100% medical-grade oxygen at pressure, HBOT dramatically increases plasma-dissolved oxygen, promotes angiogenesis (new capillary growth), mobilizes stem cells, reduces edema, and stimulates collagen remodeling to restore functional bladder tissue. [StatPearls - Radiation Cystitis and Hyperbaric Management](https://www.ncbi.nlm.nih.gov/books/NBK470594/)

How Effective Is Hyperbaric Oxygen Therapy for Radiation Cystitis?

HBOT is recognized as a noninvasive treatment that has become more prevalent for radiation cystitis in recent years, especially when conservative measures fail. [StatPearls - Radiation Cystitis and Hyperbaric Management](https://www.ncbi.nlm.nih.gov/books/NBK470594/)

The strongest evidence comes from the RICH-ART trial. Radiation-Induced Cystitis Treated with Hyperbaric Oxygen: A Randomized Controlled Trial. This was the largest prospective randomized trial of hyperbaric oxygen for chronic radiation-induced cystitis. The trial showed that HBOT improves patient-reported outcomes for hemorrhagic cystitis and related lower urinary tract symptoms. Long-term follow-up published in 2025 evaluated whether therapeutic effects persist at five years. [The Lancet EClinicalMedicine](https://www.thelancet.com/journals/eclinm/article/PIIS2589-5370(25)00146-4/fulltext) and [PubMed - RICH-ART](https://pubmed.ncbi.nlm.nih.gov/31537473/)

Large retrospective series and contemporary reviews also report total or partial resolution of hematuria in the majority of patients, with best results when HBOT starts early. Clinician-reported series have noted that when HBOT begins within six months of hematuria onset, 96% experience total or partial resolution of symptoms. [AAFP](https://www.aafp.org/afp/2016/0915/p418)

A 2024 systematic review in Nature Scientific Reports confirmed that hyperbaric oxygen therapy improves outcomes for late-onset hemorrhagic cystitis after pelvic radiation, reducing bleeding episodes and improving quality of life. [Nature Scientific Reports](https://www.nature.com/articles/s41598-024-74858-8)

What Is the HBOT Protocol for Radiation Cystitis?

Protocols vary by severity, but peer-reviewed guidance and clinical practice typically include:

• Pressure: 2.0 to 2.4 ATA (atmospheres absolute). For post-radiation injury, many centers prescribe 2.4 ATA for 80-90 minutes, which is the full rating available at OxygenWell. [PMC - HBOT as Adjunctive Therapy](https://pmc.ncbi.nlm.nih.gov/articles/PMC12842553/)
• Oxygen: 100% medical-grade oxygen via non-rebreather mask, not a standard low-flow concentrator. OxygenWell uses high-flow medical-grade delivery.
• Duration: 60 to 90 minutes per session.
• Frequency: 5 days per week.
• Total sessions: 20 to 40 sessions for radiation cystitis, with some hemorrhagic cases requiring up to 60 sessions depending on response and cystoscopy findings.

At OxygenWell, all sessions are supervised by Certified Hyperbaric Technicians, most EMT-certified, with PA support on-site most weekday hours. Chambers are grounded for safety and rated to 2.4 ATA. Not “adjusted” like many 1.3 ATA wellness centers. This is why we can deliver the FDA-cleared protocols urologists and radiation oncologists request.

Is Hyperbaric Oxygen Therapy FDA-Approved and Covered by Insurance for Radiation Cystitis?

Yes. Delayed radiation injury. Including radiation cystitis, radiation proctitis, osteoradionecrosis, and soft tissue radionecrosis. Is one of approximately 14 FDA-approved indications for hyperbaric oxygen therapy and is covered by Medicare and most PPO commercial plans when medical necessity criteria are met. [Hyperbaric Medical Solutions](https://www.hyperbaricmedicalsolutions.com/resources/learn/radiation) [PMC - Practical Guide for Gynecologic Indications](https://pmc.ncbi.nlm.nih.gov/articles/PMC11876753/)

OxygenWell is a physician-owned, insurance-approved facility in Los Angeles. We are one of the few centers in LA that meets the FDA, medical oversight, and safety standards required for coverage. Our billing team handles all pre-authorizations for you, and we provide documentation support for referring urology, urogynecology, and radiation oncology practices in Sherman Oaks, Calabasas, and across Los Angeles.

What Other Treatments Are Available for Radiation Cystitis?

Mild acute cystitis may improve with NSAIDs, hydration, antispasmodics, and bladder irritant avoidance (caffeine, alcohol, acidic juices, carbonated drinks). [Cleveland Clinic](https://my.clevelandclinic.org/health/diseases/radiation-cystitis)

For persistent hemorrhagic cystitis, options include bladder irrigation with numbing medications, sodium hyaluronate instillation to protect bladder lining, endoscopic fulguration, and in refractory cases, urinary diversion or cystectomy. [Cleveland Clinic](https://my.clevelandclinic.org/health/diseases/radiation-cystitis) Because HBOT heals tissue rather than just controlling bleeding, it is often recommended before invasive surgery.

When Should You See a Specialist for Radiation Cystitis?

Let your oncology or urology team know if you experience:

• Blood in your urine, even if intermittent
• Frequent urination that disrupts sleep or work
• Burning or pain with urination that does not resolve
• New incontinence months or years after pelvic radiation

Cystoscopy, urinalysis, and blood tests help rule out infection, stones, or recurrence and confirm radiation cystitis. [Cleveland Clinic](https://my.clevelandclinic.org/health/diseases/radiation-cystitis)

Dr. Beth Meneley, DAOM, L.Ac., Wellness Director and Co-Owner of OxygenWell, notes that our cancer support philosophy centers on terrain optimization. Restoring oxygenation, reducing inflammation, supporting detoxification and mitochondrial function, and balancing immune response. HBOT for radiation cystitis embodies that approach: restore perfusion, reduce hypoxia, and give the bladder the cellular environment it needs to heal. With 25+ years in integrative medicine and 12+ years dedicated to hyperbaric medicine, Dr. Meneley has overseen 50,000+ HBOT sessions focused on safety, personalization, and results.

Why Choose OxygenWell for Radiation Cystitis in Los Angeles?

Not all hyperbaric centers are equivalent. Los Angeles has many 1.3-1.5 ATA wellness chambers that cannot deliver FDA-cleared delayed radiation injury protocols. OxygenWell differentiators include:

• Safety Above All: Grounded monoplace chambers, medical-grade oxygen, rigorous safety protocols, on-site Safety Director with 12+ years hyperbaric experience.
• FDA Approved and Rated to 2.4 ATA: Full rated capacity for radiation injury protocols.
• Medical-Grade Oxygen That Delivers: High-flow system via non-rebreather mask. Not a 10-liter concentrator.
• Physician-Owned: Required by California law; many centers are not compliant.
• Insurance Approved Facility: Medicare and PPO accepted for FDA-approved conditions like radiation cystitis.
• Extended Hours: Evenings and weekends to accommodate working patients and those in active cancer follow-up.
• Two Locations: Sherman Oaks Galleria and Calabasas. Across from Calabasas Medicine for seamless physician referral.

Our promise: Advanced technology. Medical leadership. Unmatched safety standards. Personalized protocols. All focused on delivering the best results for you.

Take the Next Step

If you or a patient you care for has hematuria or bladder symptoms after pelvic radiation, hyperbaric oxygen therapy may offer durable relief without surgery. Early referral improves outcomes.

OxygenWell in Sherman Oaks and Calabasas offers complimentary consultations for radiation cystitis. Call (818) 661-0939 or visit www.oxygenwell.com to learn about candidacy, protocol, and insurance coverage. We collaborate closely with urologists, radiation oncologists, and gynecologic oncologists across Los Angeles to coordinate timely care.

This article is for educational purposes and does not replace medical advice. Discuss HBOT candidacy with your treating physician. HBOT is adjunct to, not a replacement for, conventional oncology follow-up.