Fungal ear infections, also known as otomycosis, affect the outer ear canal and can cause symptoms such as itching, discomfort, drainage, and temporary hearing changes. While they are less common than bacterial ear infections, fungal infections require different treatment approaches and can become persistent if not properly addressed.¹
Certain factors, including moisture exposure, ear canal irritation, and underlying health conditions, can increase the risk of developing a fungal ear infection. In this guide, we'll cover the common causes, symptoms, treatment options, prevention strategies, and signs that it's time to see an ENT specialist.
What Is a Fungal Ear Infection?
Otomycosis is a fungal infection that affects the outer ear canal, the passage that carries sound from the outside of the ear to the eardrum.¹
Several types of fungi can cause these infections, but the most common include:¹
Aspergillus
Candida
Fungal ear infections thrive in warm, moist environments and are more likely to occur when the natural balance of the ear canal is disrupted.
Unlike bacterial infections, fungal infections often cause intense itching and may produce thick debris or discharge inside the ear canal. Symptoms can sometimes develop gradually and may persist without proper treatment. Severe infections may be painful and result in the formation of a hole in your ear drum.
Fungal otitis externa usually does not clear up on its own and often requires evaluation by an ENT specialist.
What Causes Fungal Ear Infections?
Fungal ear infections occur when fungi grow in the outer ear canal. More than 60 different species of fungi have been associated with these infections, although the vast majority of cases are caused by Aspergillus and Candida species.¹
Several factors can increase the risk of developing a fungal ear infection, including:
Excess Moisture and Humid Environments
Moisture trapped in the ear canal creates an ideal environment for fungal growth.
Common moisture-related causes include:
Swimming
Frequent sweating
Humid weather
Water trapped in the ears after bathing
This is why fungal infections are sometimes associated with “swimmer’s ear.”
Cotton Swab Use and Ear Canal Irritation
Using cotton swabs inside the ears can irritate or damage the delicate lining of the ear canal. ¹,²
Cotton swabs may also:
Push debris deeper into the ear
Remove protective earwax
Create small scratches that allow infection to develop
Overuse of Antibiotic Ear Drops
Antibiotic ear drops can sometimes disrupt the normal balance of bacteria and fungi in the ear canal, allowing fungi to overgrow.²
This is one reason why prolonged or repeated antibiotic use may contribute to otomycosis.
Skin Conditions
Certain skin conditions affecting the ears may increase infection risk, including:
Psoriasis
Dermatitis
Inflamed or damaged skin makes it easier for fungal organisms to grow.
Earbuds, Hearing Aids, and Earplugs
Devices that trap moisture or irritate the ear canal may contribute to fungal infections.²
Examples include:
Earbuds
Hearing aids
Earplugs
Improper cleaning of these devices may also increase exposure to bacteria or fungi.
Weakened Immune System
People with weakened immune systems may have a higher risk of fungal infections.¹
This includes individuals with:
Diabetes
Immune disorders
Chronic illnesses
Who Is Most at Risk for Otomycosis?
Anyone can develop a fungal infection in the ear, but some groups are more vulnerable.
Higher-risk groups include:²
Swimmers and surfers
People living in humid climates
Hearing aid users
Individuals with diabetes
People with weakened immune systems
Patients with chronic skin conditions
Recurring fungal ear infections are more common when moisture exposure or underlying skin irritation continues over time.
Common Symptoms of a Fungal Ear Infection
Symptoms can vary depending on the severity of the infection.
Common otomycosis symptoms include:¹
Ear pain or burning
Feeling of fullness in the ear
Temporary hearing loss
Ear drainage or discharge
Redness and swelling
Discharge from a fungal infection may appear:¹
White
Yellow
Gray
Black
Thick or flaky
Some people notice crusting or debris inside the ear canal.
Fungal Ear Infection vs. Bacterial Ear Infection
Fungal and bacterial ear infections can share similar symptoms, which is why self-diagnosis can be difficult.
Similar Symptoms
Both fungal and bacterial infections may cause:¹,³
Ear pain
Drainage
Redness
Swelling
Temporary hearing changes
Key Differences
Fungal infections are more likely to cause:¹
Severe itching
Thick debris
Flaky discharge
Persistent symptoms despite antibiotics
Bacterial infections often cause more swelling, tenderness, and pus-like drainage.
Because symptoms can overlap, proper diagnosis by an ENT specialist is important for choosing the correct treatment.
How ENT Specialists Diagnose Fungal Ear Infections
An ENT specialist can usually diagnose a fungal ear infection through a physical examination and review of symptoms.
Physical Examination
The ear canal is examined using an otoscope or microscope to look for:
Fungal debris
Inflammation
Drainage
Swelling
Fungal infections often have a distinctive appearance that helps guide diagnosis.
Medical History Review
Your doctor may ask about:
Swimming habits
Ear cleaning practices
Previous ear infections
Hearing aid use
Skin conditions
Swab Testing
In some cases, a sample of discharge may be collected and sent to a lab to identify the specific fungus involved.
Accurate diagnosis is important because fungal infections require different treatment than bacterial infections.
How Are Fungal Ear Infections Treated?
Fungal ear infection treatment typically involves a combination of professional cleaning and antifungal medication.
Ear Cleaning and Debridement
One of the most important parts of treatment is carefully cleaning the ear canal.¹
This process removes:
Fungal debris
Discharge
Excess moisture
Professional cleaning is safer and more effective than attempting to clean the ear at home.
Antifungal Ear Drops
Antifungal ear drops are commonly prescribed to eliminate fungal growth.2 Treatment may continue for several days or weeks depending on the severity of the infection. Completing the full treatment course is important, even if symptoms improve early.
Oral Antifungal Medications
In more severe or persistent cases, oral antifungal medications may be necessary. These are generally reserved for infections that do not improve with topical treatment alone.¹
Managing Underlying Conditions
Long-term success often depends on treating contributing factors such as:
Diabetes
Skin conditions
Chronic moisture exposure
Irritation from devices or ear cleaning habits
Can Fungal Ear Infections Come Back?
Recurring fungal ear infection problems are fairly common, especially when underlying causes are not addressed.
Common reasons for recurrence include:
Ongoing water exposure
Humid environments
Continued cotton swab use
Incomplete treatment
Chronic skin irritation
Immune system issues
Reducing moisture and avoiding ear canal irritation can help lower the risk of repeat infections.
How to Prevent Fungal Ear Infections
Prevention focuses on keeping the ears dry and protecting the ear canal from irritation.
Helpful prevention tips include:¹
Dry ears thoroughly after swimming or bathing (do NOT use Q tips; often a hair dryer on low setting near the ear works well)
Avoid inserting objects into the ears
Use ear protection during water activities if recommended
Clean hearing aids and earbuds regularly
Manage eczema or skin conditions properly
Avoid excessive ear cleaning
Safe ear hygiene is one of the best ways to prevent otomycosis.
When Should You See an ENT Specialist?
You should consider seeing an ENT specialist if you experience:²
Symptoms lasting more than a few days
Severe itching or pain
Drainage from the ear
Recurring infections
Dizziness or fever
Worsening blockage or swelling
Early treatment may help prevent the infection from becoming more severe or chronic.
Get Lasting Relief From Fungal Ear Infections
Fungal ear infections can cause significant discomfort and often do not improve without proper treatment. Because symptoms may resemble bacterial ear infections, accurate diagnosis is important for effective care.
Professional treatment can help relieve symptoms, clear the infection, and reduce the risk of recurrence.
The specialists at ENT & Allergy Associates provide comprehensive evaluation and treatment for ear infections, hearing concerns, and chronic ear conditions.
Find a convenient location in:
Patients can also book an appointment online to discuss symptoms and treatment options.
Sources:
Healthline. Otomycosis: What You Need to Know.
WebMD. What Is Otomycosis?
MedlinePlus. Ear infection - acute.