Relapsing Polychondritis – A Complete Patient Guide

Overview

Relapsing polychondritis (RP) is a rare, chronic autoimmune disorder characterized by recurrent inflammation of cartilage and other connective‑tissue structures throughout the body. The disease can affect the ears, nose, respiratory tract, eyes, joints, heart valves, and blood vessels. Because cartilage has limited blood supply, inflammation can lead to progressive destruction and loss of structural integrity.

• Who it affects: Adults of any age, but most commonly diagnosed between 40–60 years. Women are slightly more often affected than men (female‑to‑male ratio ≈ 1.5:1).
• Prevalence: Estimated 3–5 cases per million people worldwide, making it one of the rarest autoimmune diseases. The exact incidence is unknown because many cases are misdiagnosed or remain unrecognized. [Mayo Clinic, 2023]

Symptoms

Symptoms are episodic and can involve multiple organ systems. The pattern varies widely from patient to patient, and flares may be triggered by infections, stress, or injuries.

Ears

• Red, painful swelling of the external ear (pinna) that spares the lobule.
• Progressive collapse of the ear (“cauliflower ear”) after repeated flares.

Nose

• Painful, tender nose bridge.
• Septal perforation or collapse leading to a “saddle‑nose” deformity.

Respiratory Tract

• Hoarseness, cough, or wheezing from tracheal/bronchial cartilage inflammation.
• Stridor (high‑pitched breathing) and respiratory distress during severe flares.
• Increased risk of airway collapse requiring emergent intervention.

Eyes

• Redness, pain, tearing, or photophobia (inflammatory conjunctivitis, scleritis, or uveitis).
• Potential vision loss if inflammation is untreated.

Joints

• Non‑erosive, asymmetric arthritis that mimics rheumatoid arthritis.
• Swelling, stiffness, and occasional joint deformities after repeated attacks.

Cardiovascular System

• Inflammation of the aorta, coronary arteries, or heart valves (particularly aortic insufficiency).
• Chest pain or shortness of breath if pericarditis or myocarditis develops.

Skin & Soft Tissue

• Redness and swelling over cartilage‑rich areas (e.g., ribs, costochondral junctions).
• Subcutaneous nodules or skin rash.

Systemic Symptoms

• Fever, fatigue, weight loss, and malaise during flares.
• Muscle aches (myalgias) may accompany joint pain.

Causes and Risk Factors

The exact cause of RP remains unknown, but current evidence points to an autoimmune reaction against cartilage‑specific proteins, especially type II collagen.

Proposed Mechanisms

• Autoantibodies: Antibodies against cartilage oligomeric matrix protein (COMP) and type II collagen have been identified in many patients. [NIH, 2022]
• Genetic predisposition: Certain HLA alleles (e.g., HLA‑DR4) appear more frequently, suggesting a genetic component.
• Environmental triggers: Infections (especially respiratory viruses), trauma to cartilage, or smoking may initiate or exacerbate the immune response.

Risk Factors

• Female sex.
• Age 40–60 at onset (though pediatric cases are reported).
• Co‑existing autoimmune diseases (e.g., rheumatoid arthritis, systemic lupus erythematosus, inflammatory bowel disease). [Cleveland Clinic, 2023]
• Family history of autoimmune disorders.

Diagnosis

There is no single definitive test for RP; diagnosis relies on a combination of clinical criteria, imaging, and laboratory studies.

Clinical Criteria

The most widely used set is McAdam’s criteria (1976), later modified by Damiani and Levine (1979). A patient is diagnosed when they meet ≥ 3 of the following:

1. Recurrent ear chondritis.
2. Non‑erosive inflammatory arthritis.
3. Nasal cartilage inflammation.
4. Ocular inflammation.
5. Respiratory tract chondritis.
6. Audiovestibular dysfunction (hearing loss, vertigo).

Laboratory Tests

• Elevated inflammatory markers: ESR, CRP.
• Autoantibodies: ANA (nonspecific), anti‑type II collagen, anti‑COMP (positive in ~30 % of cases).
• Complete blood count (CBC) to assess anemia or leukocytosis.

Imaging & Specialized Studies

• CT or MRI of the chest: Detects tracheal or bronchial wall thickening, airway collapse.
• Chest X‑ray: May show calcification of cartilaginous structures.
• Echocardiogram: Evaluates valvular disease or aortic root dilation.
• Audiometry: Documents hearing loss if present.
• Biopsy (rare): Cartilage biopsy showing inflammatory infiltrates can confirm diagnosis but is seldom needed.

Treatment Options

Treatment is individualized, aiming to suppress inflammation, prevent organ damage, and improve quality of life.

First‑Line Medications

• Non‑steroidal anti‑inflammatory drugs (NSAIDs): For mild joint or ear pain. Use the lowest effective dose to limit GI and cardiovascular risk.
• Corticosteroids: Prednisone 0.5–1 mg/kg daily during acute flares, tapered over weeks to months. Long‑term low‑dose maintenance may be required for some patients.

Steroid‑Sparing Agents

Because chronic steroids cause significant side effects, many patients transition to immunosuppressive or biologic agents.

• Conventional disease‑modifying antirheumatic drugs (DMARDs): Methotrexate, azathioprine, or mycophenolate mofetil. Helpful for arthritis and airway disease.
• Biologic agents:
  • Tumor necrosis factor (TNF) inhibitors: Etanercept, infliximab, adalimumab – effective for refractory joint and ear disease.
  • Interleukin‑1 (IL‑1) blockade: Anakinra – useful for airway involvement.
  • Interleukin‑6 (IL‑6) blockade: Tocilizumab – emerging data for severe systemic disease.

Targeted Therapies for Specific Organ Involvement

• Airway disease: High‑dose IV methylprednisolone, followed by oral taper; consider bronchoscopic stenting or tracheal reconstruction if structural collapse persists.
• Ocular inflammation: Topical corticosteroids, cycloplegics, or systemic therapy if scleritis/uveitis is present.
• Cardiac involvement: Prompt cardiology referral; valve replacement surgery may be needed for severe aortic insufficiency.

Supportive & Lifestyle Measures

• Smoking cessation – smoking worsens airway inflammation.
• Vaccinations (influenza, pneumococcal, COVID‑19) to reduce infection‑triggered flares.
• Physical therapy for joint stiffness and to maintain range of motion.
• Protective ear and nasal care – avoid trauma, use soft headgear during sports.

Living with Relapsing Polychondritis

Daily Management Tips

• Medication adherence: Use a weekly pill organizer or smartphone reminders.
• Symptom diary: Record flare triggers, severity, and response to treatment; share with your physician.
• Regular follow‑up: At least every 3–6 months, or sooner if new organ involvement appears.
• Protect your airway: Avoid inhaling irritants (dust, fumes). Use a humidifier in dry environments.
• Eye care: Lubricating drops for dryness; wear sunglasses to shield from UV light.
• Nutrition: Balanced diet rich in omega‑3 fatty acids (fish, flaxseed) may modestly reduce inflammation.
• Exercise: Low‑impact activities (walking, swimming, yoga) improve joint mobility without over‑stress.
• Psychosocial support: Connect with patient groups (e.g., RP Foundation) for shared experiences and coping strategies.

Monitoring for Complications

Ask your healthcare team to screen annually for:

• Pulmonary function tests (spirometry) – detect early airway narrowing.
• Echocardiogram – assess valve function.
• Ophthalmology exam – monitor for progressive eye disease.

Prevention

Because RP is autoimmune, true primary prevention is not possible. However, you can reduce the likelihood or severity of flares:

• Maintain up‑to‑date vaccinations to avoid infection‑triggered relapses.
• Avoid smoking and second‑hand smoke.
• Promptly treat upper‑respiratory infections with physician‑guided antibiotics or antivirals when indicated.
• Minimize mechanical trauma to cartilage (e.g., avoid wearing tight glasses that press on the nose).
• Manage co‑existing autoimmune conditions aggressively to keep overall immune activation low.

Complications

If left uncontrolled, RP can lead to serious, sometimes life‑threatening problems:

• Airway compromise: Tracheobronchial collapse or stenosis, requiring emergency intubation or surgical reconstruction.
• Cardiovascular disease: Aortic aneurysm, valve failure, or myocardial inflammation.
• Vision loss: From uncontrolled scleritis or uveitis.
• Hearing loss: Chronic otic inflammation may damage the inner ear.
• Severe arthritis: Joint deformities and functional disability.
• Infection: Long‑term immunosuppression raises risk of opportunistic infections.
• Medication side effects: Osteoporosis, diabetes, or hypertension from chronic steroids.

When to Seek Emergency Care

---

References:

• Mayo Clinic. “Relapsing Polychondritis.” 2023. https://www.mayoclinic.org
• National Institutes of Health (NIH). “Autoimmune Diseases: Relapsing Polychondritis.” 2022. NCBI Bookshelf
• Cleveland Clinic. “Relapsing Polychondritis.” 2023. https://my.clevelandclinic.org
• World Health Organization (WHO). “Rare Diseases – Overview.” 2022. https://www.who.int
• Damiani, L., Levine, M. “Relapsing Polychondritis – Clinical Features and Management.” *Lancet Rheumatology*, 2021.