Arthritis can absolutely affect your ears, and it does so more often than most people realize. Your middle ear contains the smallest bones in the body, connected by tiny synovial joints lined with the same type of tissue that coats your knees and knuckles. When inflammatory arthritis targets those joints, it can stiffen or erode them, leading to measurable hearing loss. But the ear’s vulnerability goes beyond those hidden joints: autoimmune forms of arthritis can attack the inner ear directly, gout can deposit crystals in ear cartilage, and some arthritis medications themselves carry ear-related side effects.
The Tiny Joints Most People Don’t Know About
The middle ear houses three small bones called the malleus, incus, and stapes. These bones form a mechanical chain that transmits vibrations from the eardrum to the fluid-filled inner ear, where sound signals are converted into nerve impulses. What surprises most people is that these bones are connected by true synovial joints, the same type of joint found in fingers, wrists, and knees. The incudomalleolar joint links the malleus to the incus, and the incudostapedial joint links the incus to the stapes. Both are lined with synovial membrane and lubricated by synovial fluid, which means they are susceptible to the same inflammatory processes that affect larger joints elsewhere in the body.
This isn’t just an anatomical curiosity. From an evolutionary perspective, the malleus and incus are actually repurposed jawbones. Fossil evidence and developmental biology have confirmed that these two middle ear bones are the mammalian equivalents of bones that formed the jaw joint in our reptilian ancestors.1PubMed Central. Evolution of the mammalian middle ear and jaw: adaptations and novel structures They still retain their joint-like characteristics, which is precisely why inflammatory joint diseases can reach into your ear.
How Rheumatoid Arthritis Damages the Middle Ear
Rheumatoid arthritis is probably the best-studied arthritis type when it comes to ear involvement. RA is a systemic autoimmune disease, meaning the immune system attacks healthy tissue throughout the body, not just the large joints that typically hurt. A systematic review of audiological studies in RA patients confirmed that the disease can affect both the middle ear joints and the inner ear structures simultaneously.2PubMed Central. Audiological Features in Patients with Rheumatoid Arthritis: A Systematic Review
In the middle ear, RA inflammation can cause the ossicular joints to stiffen, erode, or even disconnect. A controlled study of 37 RA patients and 35 healthy controls found that hearing impairment was significantly more common in the RA group. About 35% had sensorineural hearing loss (damage to the inner ear or nerve), roughly 24% had conductive hearing loss (a problem with how sound is physically transmitted through the middle ear), and about 11% had a mixed type combining both. The researchers concluded that discontinuity of the ossicles, rather than simple stiffness, was the main driver of the conductive component.3PubMed. Hearing loss and middle ear involvement in rheumatoid arthritis
Animal research has given us a closer look at what actually happens to the bones. In mice with collagen-induced arthritis (a standard laboratory model of RA), high-resolution imaging revealed that the space between the incus and stapes shrank by more than half. The stapes bones in arthritic mice were riddled with hundreds of tiny closed pores, occupying about 12% of the bone volume, compared with fewer than 10 pores making up just 0.4% in healthy controls.4PubMed Central. Ossicular Bone Damage and Hearing Loss in Rheumatoid Arthritis: A Correlated Functional and High Resolution Morphometric Study in Collagen-Induced Arthritic Mice That kind of bone erosion makes the ossicles less efficient at conducting sound, even if they haven’t fully disconnected.
Detecting the Problem Before Hearing Gets Worse
One of the trickier aspects of ear involvement in RA is that it often creeps up gradually. You might not notice a slow decline in hearing the way you’d notice a swollen knee. Audiologists use several tests to pick up subtle changes. Standard hearing tests (pure tone audiometry) can identify whether hearing loss is present and what type it is. Tympanometry measures how the eardrum and middle ear respond to pressure changes, and abnormal results can point to stiffened or disrupted ossicular joints.
A study using multifrequency tympanometry in 30 RA patients found that 40% showed abnormal resonance values in their middle ears. The abnormalities correlated with more aggressive disease, suggesting that patients with severe RA are at higher risk for ear involvement.5PubMed. Middle ear mechanics in subjects with rheumatoid arthritis A more recent study found that middle ear resonance frequency values in RA patients were significantly lower than in healthy controls, another sign that RA changes how the ossicular chain vibrates.6PubMed Central. The Effect of Rheumatoid Arthritis on Middle and Inner Ear Functions
Acoustic reflex testing, which measures how the middle ear muscles contract in response to loud sounds, also shows abnormalities in RA. One study of Sudanese RA patients found impaired acoustic reflexes in roughly a quarter of ears tested.7International Journal of Otolaryngology and Head & Neck Surgery. Hearing Assessment among Sudanese Rheumatoid Arthritis Patients versus Non-Rheumatoid Arthritis Individuals These tests aren’t routinely ordered for arthritis patients, which is part of why ear involvement often goes unrecognized. If you have RA and feel like your hearing has changed, asking for an audiometric evaluation is reasonable.
When Arthritis Attacks the Inner Ear
The middle ear joints aren’t the only ear structures at risk. Autoimmune inner ear disease, or AIED, is a condition where the immune system targets the cochlea itself, the spiral organ deep inside the temporal bone that converts vibrations into electrical signals for the brain. AIED can occur on its own, but it also shows up alongside systemic autoimmune diseases like RA, lupus, and other connective tissue disorders.
The hallmark of AIED is hearing loss that fluctuates or progresses over weeks to months, often affecting both ears. It can be accompanied by a sensation of ear fullness, tinnitus, and sometimes vertigo. Distinguishing AIED from Ménière’s disease can be difficult because the two conditions share many symptoms, though Ménière’s tends to present more prominently with vestibular symptoms like spinning dizziness and has a different underlying mechanism involving fluid buildup in the inner ear.8PubMed Central. Autoimmune Inner Ear Disease from a Rheumatologic Perspective
RA can affect the auditory system either as a direct complication of the disease or as a secondary consequence of medication side effects.9PubMed Central. Sudden-Onset Sensorineural Hearing Loss and Tinnitus in a Patient With Rheumatoid Arthritis: A Case Report and Literature Review That dual pathway matters because if you develop hearing changes while being treated for RA, the cause could be the disease itself, the treatment, or both working together.
Arthritis Medications That Can Hurt Your Ears
Several classes of drugs commonly used for arthritis carry their own ear-related side effects. High-dose salicylates (the aspirin family) are perhaps the most well-known offenders. Tinnitus, reduced sensitivity to quiet sounds, and altered perception of what sounds are like are all recognized side effects of large salicylate doses. These symptoms tend to fluctuate during treatment and are generally reversible once the drug is stopped or the dose is lowered.10The Open Rheumatology Journal. Is Hearing Impairment Associated with Rheumatoid Arthritis? A Review
The antimalarial drugs hydroxychloroquine and chloroquine, widely used in RA and lupus, present a different concern. These medications can damage the sensory hair cells inside the cochlea, reduce the population of auditory nerve cells, and cause atrophy of structures that maintain the chemical environment the inner ear needs to function. The resulting hearing loss is sensorineural and can be permanent.10The Open Rheumatology Journal. Is Hearing Impairment Associated with Rheumatoid Arthritis? A Review Other NSAIDs and some disease-modifying drugs also have the potential to affect hearing, though the evidence varies by specific drug.
The practical upshot is that if you’re on long-term arthritis medication and notice new ringing in your ears or a feeling that sounds are muffled, it’s worth mentioning to your doctor rather than assuming it’s just aging or noise exposure.
Osteoarthritis of an Ear Bone
When people think of osteoarthritis, they picture worn-down cartilage in hips and knees. But the ear ossicles also have articular surfaces covered in hyaline cartilage, and they develop through the same process of endochondral ossification as the long bones of your arms and legs. That makes them theoretically susceptible to osteoarthritis as well.
A study examining stapes bones removed during surgery for otosclerosis (a condition where abnormal bone growth fixes the stapes in place) found clear signs of osteoarthritis at the head of the stapes. Surface fissuring was present in 65% of specimens, cartilage erosion in 49%, irregularity at the osteochondral interface in 51%, and occasional osteophytes (bone spurs) in 8%.11PubMed Central. The Stapes in Otosclerosis: Osteoarthritis of an Ear Ossicle The researchers suggested that the persistent vibration of ossicles against the rigid, ankylosed footplate in otosclerosis could drive osteoarthritic changes in the joint above, essentially wear-and-tear arthritis in a bone smaller than a grain of rice.
Whether ordinary aging produces similar osteoarthritic changes in the middle ear of people without otosclerosis is less clear. The research on this is thin, and the bones are so tiny that studying them in living patients is impractical. But the finding demonstrates that ear ossicles are not immune to the degenerative processes that affect cartilaginous joints everywhere else.
Juvenile Arthritis and the Jaw-Ear Connection
Children and adolescents with juvenile idiopathic arthritis face their own set of ear-related problems, often centered on the temporomandibular joint. The TMJ sits just millimeters in front of the ear canal, and when it’s inflamed, the symptoms often include ear pain, a feeling of fullness in the ear, and sometimes difficulty hearing clearly.
A Norwegian cross-sectional study of 221 young people with JIA and 221 healthy controls found that about 40% of the JIA group had temporomandibular disorder based on symptoms and clinical signs, compared with only about 11% of healthy controls. Painful TMD in the prior 30 days was reported by roughly 27% of the JIA group versus 5% of controls. Jaw opening was also more restricted in the JIA group.12BMC Oral Health. Prevalence of temporomandibular disorder in children and adolescents with juvenile idiopathic arthritis – a Norwegian cross- sectional multicentre study
Beyond the TMJ, juvenile chronic arthritis can directly alter middle ear function. A study of children with juvenile chronic arthritis found changes consistent with inflammation of the synovial joints between the ossicles, leading to stiffness of the eardrum and ossicular chain.13Annals of the Rheumatic Diseases. Middle ear function in patients with juvenile chronic arthritis So in children, arthritis can affect the ear both indirectly through TMJ inflammation and directly through the same ossicular joint mechanism seen in adult RA.
Referred Ear Pain from Arthritic Joints Nearby
Sometimes the ear itself is perfectly healthy, but it hurts anyway. Referred otalgia, ear pain originating from somewhere else, is surprisingly common and frequently traced back to arthritic conditions in neighboring structures. The ear’s nerve supply is unusually complex, involving multiple cranial nerves and upper cervical nerves that also serve the jaw, throat, neck, and sinuses.14PubMed Central. Secondary Otalgia: Referred Pain Pathways and Pathologies Because these nerves overlap, pain from an arthritic TMJ or a degenerative cervical spine can register in the brain as ear pain.
Temporomandibular joint disorders, cervical spine pathology, and dental problems are among the most common causes of referred otalgia.15PubMed Central. Referred otalgia: Common causes and evidence-based strategies for assessment and management If you have arthritis in your neck or jaw and experience ear pain with a normal-looking ear canal and eardrum, the arthritis may well be the culprit. This is worth knowing because people in this situation sometimes undergo unnecessary ear treatments when the real issue is the joint next door.
The sensory pathways involved include branches of the trigeminal nerve (which also supplies the TMJ and teeth), the vagus nerve, the glossopharyngeal nerve, and cervical spinal nerves C2 and C3. Any disease process within the territory of these nerves can potentially produce ear pain.16PubMed Central. The radiology of referred otalgia Cervical spondylosis, a type of osteoarthritis affecting the neck vertebrae, is one of the more underappreciated triggers.
Gout and the Outer Ear
Gout, caused by the deposition of uric acid crystals in tissues, has a well-documented fondness for the ear. The helix of the outer ear, the curved ridge along the top and side, is a classic location for gouty tophi, those chalky white nodules that form when urate crystals accumulate. The ear’s relatively cool temperature and limited blood flow create an environment where uric acid crystallizes readily.
Tophi on the ear were historically one of the textbook signs of chronic gout, though they’re less commonly seen today because gout is usually treated before it reaches that stage. A review of unusual tophus locations confirmed that the head and neck, including the ear, are among the many sites where urate crystals can deposit.17PubMed. The broad spectrum of urate crystal deposition: unusual presentations of gouty tophi Ear tophi don’t typically cause hearing loss, since they sit on the external cartilage rather than inside the ear canal, but they can be tender and cosmetically bothersome.
Relapsing Polychondritis and the Inflamed Outer Ear
Relapsing polychondritis is a rarer condition that deserves mention because the ear is one of its signature targets. RP is an episodic inflammatory disease that attacks cartilage throughout the body, including the elastic cartilage of the outer ear, the cartilage of the nose, the hyaline cartilage of peripheral joints, and the cartilage supporting the airway. When it hits the ear, the pinna (the visible outer ear) becomes red, swollen, and painful, sometimes dramatically so. Characteristically, the earlobe is spared because it contains no cartilage.18PubMed Central. Relapsing polychondritis: inflamed joints and ears
Repeated flares can destroy the ear’s structural cartilage, leaving it floppy or deformed, a condition sometimes called “cauliflower ear” when it reaches an advanced stage. RP often presents alongside joint symptoms, making it a condition where arthritis and ear inflammation are two faces of the same underlying disease. It’s uncommon enough that many doctors haven’t seen a case firsthand, but it’s important diagnostically because a suddenly red, swollen ear (especially with sparing of the lobe) in someone with joint pain is a strong clinical clue.
Psoriatic Arthritis and Inner Ear Function
Psoriatic arthritis, a type of spondyloarthropathy that affects some people with psoriasis, has also been linked to inner ear changes. A study comparing psoriatic arthritis patients with healthy controls found statistically significant differences in hearing thresholds at higher frequencies and in otoacoustic emission measurements, which assess the function of the outer hair cells deep within the cochlea.19PubMed Central. Functions of the inner ear in psoriatic arthritis The affected frequencies were in the 3,000 to 6,000 Hz range, which is the region where early noise-related and age-related hearing damage also tends to show up first, making it easy to overlook as “just getting older.”
The mechanism isn’t entirely clear, but autoimmune-driven vasculitis (inflammation of small blood vessels) is suspected. The inner ear depends on an extremely precise blood supply, and even subtle vascular inflammation can compromise the delicate hair cells that transduce sound. This is the same suspected pathway by which RA damages the cochlea, suggesting that many different types of inflammatory arthritis share an ability to reach the inner ear through immune-mediated vascular injury.
What to Watch For and When to Ask
Ear involvement in arthritis tends to be underreported and underdiagnosed. Most rheumatologists focus on the joints you can see and feel, and most ear, nose, and throat doctors don’t routinely ask about arthritis history. If you have any form of inflammatory arthritis, keeping an eye on subtle hearing changes is worthwhile. Things like gradually turning the TV louder, asking people to repeat themselves more often, new ringing or buzzing in the ears, or a persistent feeling of ear fullness can all be early signals.
A baseline hearing test early in the course of your arthritis diagnosis gives your doctors something to compare against later. If hearing does decline, knowing whether the loss is conductive, sensorineural, or mixed helps determine whether the problem is in the middle ear joints, the inner ear, or both, which in turn guides whether the approach is adjusting arthritis medications, treating the ears directly, or a combination. The fact that certain arthritis drugs can independently cause hearing damage makes this distinction especially important, since the fix for drug-induced hearing loss is changing the medication, while the fix for disease-driven middle ear involvement may be more aggressive immunosuppression or, in rare severe cases, surgical intervention.