Can Relapsing Polychondritis Affect One Ear or Area?

Yes, relapsing polychondritis (RP) can begin in just one ear, the nose, or a single body area, especially in the early stages of the disease. While the “classic” picture of RP involves multiple inflamed cartilage sites across the body, many patients experience a limited or partial form of the disease that begins in a single location. Over time, the condition may remain confined to that area or evolve to involve other sites, which is why ongoing medical evaluation is essential.

Early and Limited Disease

It is well recognized that RP can start small. In one cohort study of patients with ear-predominant or airway-predominant patterns, roughly 25% presented with “limited” disease at their very first medical evaluation ^[1].

Because RP can develop slowly over time, many patients with early or localized symptoms do not immediately meet traditional diagnostic classification checklists, such as the McAdam or Michet criteria ^[2]. These criteria were designed to help standardize research and diagnosis, but they are not absolute rules that every patient must meet right away. In fact, one retrospective study of 87 clinically diagnosed RP patients found that over 65% did not fulfill these traditional strict criteria initially, often being classified instead as having “partial” or “limited” disease ^[3].

The “Earlobe Sign”
When ear cartilage becomes inflamed, the redness and swelling typically spare the soft, fleshy earlobe at the bottom ^{[4] [5]}. This “earlobe sign” is a helpful clue for doctors considering an RP diagnosis. However, it is only a clue, not a definitive diagnostic test. Certain bacterial infections can also spare the earlobe, meaning any hot, swollen, and painful ear requires immediate clinical evaluation.

How Doctors Diagnose Incomplete RP

There is no single laboratory blood test that can definitively diagnose RP ^[6]. Instead, your medical team must rely on a combination of your clinical symptoms, physical examination, and medical history ^{[6] [7]}.

• Longitudinal follow-up: An individualized follow-up plan is crucial. Because RP is an evolving condition, characteristic inflammation in other cartilage sites may not appear until several years after your initial symptoms ^{[6] [7]}.
• Imaging and Pulmonary Testing: If your doctor suspects hidden inflammation, they might recommend tests like a CT (Computed Tomography) scan of your airways or pulmonary function (breathing) tests ^[8]. While PET/CT (Positron Emission Tomography) scans can sometimes detect silent inflammation, they involve radiation and are not automatically required for every patient with limited symptoms ^[9].
• Cartilage Biopsy: Taking a small tissue sample from an accessible inflamed area, like the ear or nose, can provide helpful evidence ^[10]. However, biopsies are not always specific for RP, are not always necessary, and can occasionally cause poor healing or scarring ^{[11] [12]}. They are typically reserved for situations where the diagnosis is uncertain or to rule out an infection.

Ruling Out “Mimics”

When symptoms are limited to a single area, it is especially important for your doctor to evaluate for other, more common conditions ^[6]:

• Infection and Trauma: A single inflamed ear is frequently a bacterial infection (cellulitis or perichondritis) or a reaction to trauma, such as a piercing. RP is often suspected when the swelling and pain keep coming back or fail to improve with appropriate antibiotics ^{[5] [13]}.
• Granulomatosis with polyangiitis (GPA): This autoimmune condition can also cause isolated inflammation of the ear cartilage or nasal passages. Doctors will typically run an ANCA blood test to evaluate for GPA ^[14]. However, ANCA can be negative in GPA, so no single blood test can definitively rule it out ^[15].
• Crystal Arthritis: Conditions like gout or pseudogout occur when microscopic crystals deposit in tissues. While rare in the ear, they can occasionally mimic cartilage inflammation ^[16].
• VEXAS Syndrome: This is a rare genetic inflammatory condition most often seen in older men, though it can occur in others. If you have ear or nose inflammation along with unexplained fevers, systemic inflammation, or abnormal blood counts (such as anemia), your doctor may order a specialized genetic test looking for a UBA1 mutation ^{[17] [7]}.
• Sarcoidosis: This inflammatory disease can affect the nasal passages and cause changes to the shape of the nose that closely resemble the nasal symptoms of RP ^[18].

When to Seek Urgent Care

Because relapsing polychondritis and its mimics can involve critical structures like the airway, vision, and heart, do not wait for your next routine check-up if you develop severe or rapidly changing symptoms. Seek immediate medical attention if you experience:

• Airway changes: New or worsening shortness of breath, noisy breathing (stridor), a rapidly changing voice, or difficulty swallowing.
• Signs of severe infection: A hot, highly painful, or draining ear, especially if accompanied by a fever or following a recent piercing.
• Eye changes: Severe eye pain, sudden redness, or sudden changes in your vision.
• Cardiovascular or hearing symptoms: Chest pain, fainting, or sudden hearing loss.