Swimmer’s ear happens when water stays trapped in the ear canal and the skin inside gets irritated, allowing bacteria or fungi to grow. The most effective way to stop it is to keep the canal dry, never insert anything into it, and treat early symptoms promptly. Once infection sets in, prescription ear drops are usually needed — over-the-counter remedies often do not reach the infection.
What Is Swimmer’s Ear?
Swimmer’s ear is an infection of the outer ear canal, the tube that runs from the outside of your ear to the eardrum. Doctors call it otitis externa.
It is different from a middle ear infection, which happens behind the eardrum and is common in young children. Swimmer’s ear affects the skin lining the canal. That skin is thin and easily damaged. When it gets scratched, waterlogged, or irritated, bacteria that normally live on the skin can multiply and cause infection.
The name comes from the link to water exposure. But swimmer’s ear can develop without swimming. Anything that traps moisture or breaks the skin in the canal can set it off — humid climates, heavy sweating, cleaning ears with cotton swabs, or wearing hearing aids and earbuds for long periods.
What Causes Swimmer’s Ear and Who Is at Risk?
The ear canal is a warm, dark, moist tube — good conditions for bacterial growth when the skin is damaged. Water that stays in the canal softens the skin and can carry organisms deeper in.
The most common bacterial causes are Pseudomonas aeruginosa and Staphylococcus aureus. Fungal infections are less common but do occur, particularly after repeated courses of antibiotic drops.
Risk goes up with:
- Frequent swimming, especially in lakes, rivers, or untreated water
- Inserting cotton swabs, fingers, or other objects into the ear
- Skin conditions such as eczema or psoriasis affecting the ear canal
- Narrow or unusually shaped ear canals
- Hearing aids or earbuds that block airflow and trap moisture
- Aggressive cleaning that removes the natural protective earwax
- Diabetes or a weakened immune system, which raises the risk of more serious infection
Earwax is not the enemy here. It is slightly acidic and contains substances that help block bacterial and fungal growth. Removing it repeatedly can make infections more likely.
How To Stop Swimmer’s Ear Before It Starts
Prevention works best when you focus on keeping the canal dry and leaving its natural defenses intact.
After swimming or showering, tilt your head to each side and gently pull the earlobe in different directions to help water drain. A hair dryer on the lowest heat and fan setting, held several inches from the ear, can help dry the canal. Keep it moving — do not aim steady hot air into the ear.
Alcohol-based ear drops sold for swimmers can help evaporate trapped water in people with healthy ears. These products are typically a mix of alcohol and sometimes vinegar. They are not for everyone: do not use them if you have a perforated eardrum, ear tubes, an active ear infection, or ear pain. They can cause significant pain and irritation in those situations.
Vinegar drops are sometimes suggested because vinegar is acidic and may make the canal less hospitable to bacteria. Evidence for this is limited, and vinegar can irritate skin that is already inflamed. If you have any ear pain, discharge, or hearing change, skip home drops and see a clinician.
A few habits make a real difference:
- Never put cotton swabs, keys, or fingers into the ear canal
- Use earplugs or a snug swim cap if you swim often
- Take out hearing aids and earbuds during the day to let the canal air out
- Shower instead of soaking if you are prone to infections
What Are the Symptoms of Swimmer’s Ear?
The first sign is usually itching inside the ear. Then comes pain that gets worse when you pull on the earlobe or push on the small flap of cartilage in front of the ear — this tenderness is a hallmark of the condition.
Other symptoms include:
- Redness and swelling of the ear canal
- A feeling of fullness or blockage
- Clear, cloudy, or pus-like fluid draining from the ear
- Muffled or reduced hearing on the affected side
Pain that spreads to the face or neck, severe swelling that closes the canal, fever, or a deep aching pain are warning signs. These can point to a more serious infection that needs urgent care. People with diabetes or weakened immune systems should take these symptoms especially seriously.
How Is Swimmer’s Ear Treated?
Most cases are treated with prescription ear drops that contain an antibiotic, sometimes combined with a steroid to reduce swelling. The drops need to reach the infected skin, so a clinician may first clean debris or wax from the canal.
Treatment usually runs for about a week, though the exact course depends on the case. Symptoms often improve within a few days, but finishing the full course matters. Stopping early can let the infection return.
Keeping the ear dry during treatment is important. Many clinicians advise staying out of pools, lakes, and the ocean until the infection clears and the pain is gone.
Over-the-counter pain relievers such as acetaminophen or ibuprofen can help with discomfort. Do not use leftover antibiotic drops from a previous infection, and do not use drops meant for the eyes or for middle ear infections. Some drops are not safe if the eardrum is perforated, which is one reason a clinician should look inside the ear before treatment.
If symptoms do not improve within a few days of starting treatment, or if they get worse, follow up with your clinician. Fungal infections and resistant bacteria may need different treatment.
What Happens If Swimmer’s Ear Is Not Treated?
Mild cases can sometimes settle on their own, but the infection can also spread. When it moves beyond the canal, it can affect the surrounding skin and tissue.
A rare but serious complication is malignant otitis externa, also called skull base osteomyelitis. It happens when infection spreads to the bone at the base of the skull. This is uncommon, but it is more likely in older adults with diabetes or people with weakened immune systems. It requires prompt medical treatment, often with intravenous antibiotics.
Other possible complications include ongoing pain, hearing loss, and narrowing of the ear canal from repeated infections. These are reasons not to ignore symptoms that last more than a few days.
When Should You See a Doctor?
See a clinician if you have ear pain, drainage, or hearing changes that last more than a day or two, or if symptoms are getting worse. Get care right away if you have severe pain, swelling around the ear, fever, or pain that spreads to your face or neck.
Also seek care before using any home drops if you have a history of a perforated eardrum, ear surgery, or ear tubes. If you have diabetes or a weakened immune system, treat ear symptoms as urgent rather than waiting to see if they improve.
The bottom line: swimmer’s ear is common, treatable, and largely preventable. Keep the canal dry, keep objects out of it, and act early when symptoms start.
Frequently Asked Questions
How long does swimmer’s ear last?
With treatment, most cases improve within a few days and clear within about a week to ten days. Without treatment, symptoms may linger or worsen.
Can I swim with swimmer’s ear?
No, it is best to stay out of pools, lakes, and the ocean until the infection clears and pain is gone. Water can keep the canal moist and slow healing.
Can I use hydrogen peroxide or vinegar for swimmer’s ear?
These are not reliable treatments for an active infection and can irritate inflamed skin. See a clinician for proper drops, especially if you have ear pain or discharge.
How can I prevent swimmer’s ear?
Keep your ears dry, never insert objects into the canal, and use earplugs or a swim cap if you swim often. Alcohol-based drops may help some people with healthy ears, but not those with a perforated eardrum or active infection.
