Cogan’s Syndrome

What is Cogan's Syndrome?

Cogan's syndrome is a rare autoimmune systemic vasculitis that inflames the inner ear and the eye, and it mainly affects young adults.^{[1, 2]} It is a serious condition that can cause permanent deafness or blindness, so it needs specialist treatment from the start.^[1]

Common symptoms

The classic features are an eye problem called interstitial keratitis (inflammation of the cornea) and hearing and balance symptoms from the inner ear.^{[3, 4]} Eye symptoms include pain, redness, light sensitivity and blurred vision. Inner ear symptoms include sensorineural hearing loss, tinnitus, vertigo and imbalance.

Some people also have fever, joint and muscle pain, headache and fatigue, and in a minority the large blood vessels or the heart are involved (for example, aortitis).^{[2, 4]}

Causes and risk factors

The cause is unknown. Researchers think it is an autoimmune or immune-mediated disease, with autoantibodies directed against antigens in the cornea, inner ear and blood vessel lining.^{[2, 4]} One hypothesis is that a viral infection triggers the disease in some people, but no specific virus has been proven.^[3]

It is divided into a typical form, in which eye and ear symptoms appear within about 2 years of each other, and an atypical form, in which they are further apart or the eye disease takes another form.^{[1, 2]}

How it is diagnosed and treated conventionally

There is no specific test, and Cogan's syndrome is diagnosed by excluding other conditions after careful examination by eye, ear and rheumatology specialists.^{[1, 2]} Hearing tests and eye examinations are central, and diagnosis is often delayed because the disease is rare.^[3]

Corticosteroids are the first-line treatment, and starting early may limit permanent damage.^{[3, 4]} Long-term steroids alone are no longer recommended, so steroid-sparing immunosuppressants and biologic drugs such as TNF-alpha blockers are used, although evidence for specific options is limited by the rarity of the disease.^{[4, 5]} Cochlear implants can help people with severe hearing loss that does not respond to drugs.^[4]

Why Cogan's Syndrome calls for a whole-person approach

Cogan's syndrome affects several organs at once, including the eyes, ears and sometimes the blood vessels and heart, so care usually involves rheumatology, ophthalmology, ear, nose and throat and audiology teams.^{[1, 4]} Supportive care can look at the effects of living with the condition, but it does not address the autoimmune process.

Immune-mediated inflammation

The disease is thought to result from immune attack on inner ear, corneal and vascular tissue, which is why immune-suppressing drugs are the core of treatment.^{[2, 3]}

Hearing loss, tinnitus and balance

Recurrent inner ear attacks can lead to deafness, and balance problems and tinnitus can persist even when the inflammation is controlled.^{[3, 4]}

Medication effects

Long courses of steroids and other immunosuppressants have side effects, which is why your doctors will monitor your treatment. Any herb or supplement must be checked against these drugs.

Stress and sleep

Chronic illness with a risk of lasting hearing or vision loss is stressful, and stress and poor sleep can make daily symptoms harder to bear. This is the main area where supportive care is studied, as described below.^{[6, 7]}

Acupuncture as supportive care in Cogan's Syndrome

What the research shows

No clinical trials of acupuncture for Cogan's syndrome were found in PubMed. Acupuncture does not treat the autoimmune inflammation, and it must never delay or replace urgent evaluation and treatment of sudden hearing loss or eye inflammation.

Related symptoms have been studied in other conditions. For sudden sensorineural hearing loss, a meta-analysis of 12 trials (863 patients) found acupuncture combined with standard medical treatment worked better than standard treatment alone, but the evidence was rated low or very low because of bias and small trials.^[8] A second meta-analysis of 20 trials reached a similar conclusion and called for high-quality studies.^[9] These are not studies of Cogan's syndrome, and the hearing loss of Cogan's syndrome is caused by autoimmune inflammation.

For tinnitus, a meta-analysis of 8 trials (504 participants) found no significant difference on the main visual analogue scale outcome, though secondary tinnitus handicap scores were better with acupuncture. The authors said the trials were small and low quality.^[10] An earlier review found that most Chinese trials were positive and most English-language trials were negative, with methodological flaws in many.^[11] For sleep, a meta-analysis of 24 trials of acupuncture for insomnia found better sleep scores than drug treatment, with highly variable results.^[6]

How acupuncture may work

No mechanism has been shown for Cogan's syndrome. The reviews above report symptom changes in other conditions but do not establish how acupuncture works for the ear.^{[8, 10]}

What treatment involves

A session uses fine, sterile, single-use needles, usually left in place for about 20 to 40 minutes, with a short course of visits and a reassessment. In prospective studies, about 9 in 100 patients had a minor reaction such as pain or bleeding at a needle site, and serious events occurred in about 1 in 10,000.^[12]

Tell the practitioner first about your diagnosis and all your medicines. If you take immunosuppressants or high-dose steroids, you may be more prone to infection and slower to heal, so mention this before treatment. Also tell us about blood thinners, bleeding disorders, pregnancy and a pacemaker, which matters for electroacupuncture.

Ayurvedic medicine as supportive care in Cogan's Syndrome

The Ayurvedic view

Ayurveda has no classical diagnosis that matches Cogan's syndrome. A practitioner might describe ear symptoms, dizziness and burning, red eyes in terms of imbalanced Vata and Pitta. These are traditional frameworks used to select supportive care, not biomedical explanations of the autoimmune process.

Therapies that may be used

Care is individualized and, as supportive care, may include:

• Diet and daily routine, such as regular meals and consistent sleep hours
• Gentle breathing and relaxation practices for stress and sleep
• Herbs prescribed individually after your medicines have been reviewed
• Herbal preparations applied to the skin (transdermal medication therapy), considered case by case

Panchakarma is not appropriate during pregnancy, acute illness or frailty, and it is not suitable for someone with active inflammation, on high-dose steroids or other immunosuppressants, or with heart or blood vessel involvement. Oil or other treatments near the eyes and ears should not be used without your eye and ear specialists' agreement.

What the research shows

There is no research on Ayurvedic medicine for Cogan's syndrome. A PubMed search found no clinical trials and no case reports. For stress, a meta-analysis of 12 trials (1,002 adults) found that ashwagandha lowered anxiety and stress scores compared with placebo, with low-certainty evidence and highly inconsistent results.^[7] None of the participants had Cogan's syndrome, and because Cogan's syndrome is treated with immune-suppressing drugs, any such herb should be reviewed by your physician first.^{[4, 13]}

Herbal medicine as supportive care in Cogan's Syndrome

Herbs and formulas that have been studied

No herb or formula has been studied for Cogan's syndrome. Ashwagandha has been studied for stress and anxiety in other groups.^[7]

What the research shows

The research does not show that any herb or formula helps Cogan's syndrome, and it cannot be expected to replace immune-suppressing drugs. Any herbal care would be limited to general symptoms such as stress and sleep.

Safety and herb-drug interactions

Herbs can interact with immunosuppressants, anticoagulants and other medicines, sometimes with serious results. A review of herb-drug interactions describes St John's wort lowering ciclosporin levels, with reports of organ rejection, and reduced tacrolimus levels.^[13] Several herbs are also linked to bleeding in people taking warfarin.^[14] Herbal and dietary supplements are a recognized cause of liver injury, which matters when you are also taking drugs such as methotrexate or azathioprine.^[15]

In one study, about one fifth of Ayurvedic medicines bought online contained detectable lead, mercury or arsenic.^[16] Herbs should come from tested sources and be prescribed individually. Tell us if you are pregnant or breastfeeding, or have liver or kidney disease.

Translating traditional medicine into modern biological language

This is interpretation, not equivalence. Chinese medicine may describe the inflammation and dizziness of this condition as internal heat, wind or yin deficiency, and tinnitus as kidney deficiency. Ayurveda may describe aggravated Vata and Pitta. Researchers instead describe autoimmune attack on the inner ear, cornea and blood vessels.^{[2, 3]}

The only loose overlap is at the level of symptoms such as stress, sleep and tinnitus distress, where studies of acupuncture or herbs may apply.^{[6, 10]} No study has shown that a traditional pattern corresponds to a biological process in Cogan's syndrome.

How this care fits with your medical care

Complementary care for Cogan's syndrome is supportive only. For a condition like this, we ask that you are under a physician's care for it and that your treating team knows you are receiving complementary care. Keep your rheumatology, eye, ear and audiology visits, and do not stop or change prescribed steroids or other medicines without your prescriber.

We do not diagnose or manage Cogan's syndrome. Please bring your diagnosis, recent hearing tests and eye examination reports, a list of medicines and supplements, and your specialists' contact details.

When to seek urgent medical care

Cogan's syndrome can cause permanent damage quickly, so new or worsening symptoms need immediate medical assessment.^{[1, 4]}

• Sudden hearing loss or a sudden change in hearing in either ear
• New eye pain, redness, light sensitivity or blurred or lost vision
• Severe vertigo with vomiting, or new difficulty walking
• Chest pain, shortness of breath, fainting or a very fast or irregular heartbeat
• Fever with new weakness, rash or swelling
• Signs of infection while on immunosuppressive medicines

If any of these occur, call 911 or go to the nearest emergency department.