What is swimmer's ear (otitis externa)?
Swimmer's ear is a bacterial infection of the outer ear canal — distinct from a middle-ear infection — that develops when water lingers in the canal after swimming. Swimmer's ear, medically known as otitis externa, is an infection of the ear canal caused by water that becomes trapped and allows bacteria to grow. According to the CDC, healthy-swimming habits like drying the ears help prevent this common recreational water problem. Unlike a middle ear infection (otitis media), which occurs behind the eardrum, swimmer's ear affects the outer ear canal—the passage from the outer ear opening to the eardrum.
The most common culprit is the bacterium Pseudomonas aeruginosa, which thrives in warm, moist environments like the ear canal after swimming. When water stays in the ear for extended periods, it softens the skin lining the canal and washes away earwax, the ear's natural protective barrier. This creates the perfect environment for bacterial growth and infection.
Why are children more susceptible than adults?
Children get swimmer's ear more often because their ear canals are narrower and more curved, their earwax is softer, and they spend longer in the water without drying their ears. Children are more prone to swimmer's ear for several anatomical and behavioral reasons. Their ear canals are narrower and more curved than adults', making it harder for trapped water to drain naturally. Additionally, children's earwax is often softer and less acidic, providing less protection against bacterial infection.
Behaviorally, children also spend more time in water during swimming lessons and summer activities. They may spend hours in pools without proper ear protection and are less likely to dry their ears carefully after exiting the water. These factors combine to make swimmer's ear one of the most common pediatric ear infections, particularly during warm months.
How can you prevent swimmer's ear in kids?
Prevent swimmer's ear by drying the ears thoroughly after swimming, using well-fitted earplugs, applying preventative ear drops, and keeping cotton swabs out of the ear canal. Prevention is far more effective than treatment — especially as you head into pool opening season. The goal is simple: keep water out of the ear canal and maintain the natural protective layer of earwax.
Dry ears thoroughly after swimming. This is the most effective prevention step. After your child exits the water, use a clean, soft towel to gently dry the outer ear. Have your child tilt their head to each side and pull the outer ear gently to help trapped water drain. Some parents find it helpful to have children lie on their side with the affected ear facing down for a few minutes to allow gravity to help drain water.
Use earplugs during water activities. Properly fitted earplugs create a barrier that prevents water from entering the ear canal. Foam earplugs are inexpensive and effective, though some children find them uncomfortable. Silicone earplugs are reusable and often more comfortable for extended water time. Ensure they are inserted correctly for maximum protection.
Apply preventative ear drops after swimming. Many parents use a mixture of equal parts white vinegar and rubbing alcohol applied with a clean dropper after swimming. The vinegar maintains acidity in the ear canal (creating an unfavorable environment for bacteria), while the alcohol helps evaporate trapped water. Alternatively, over-the-counter swimmers' ear drops containing these ingredients are available and easy to use.
Never use cotton swabs inside the ear canal. Cotton swabs are one of the biggest culprits in causing swimmer's ear. They push water deeper into the canal, damage the protective earwax, and can scratch the sensitive skin lining. Use a soft towel for drying instead. If earwax buildup is a concern, consult your child's doctor about safe removal methods. The American Academy of Pediatrics (HealthyChildren.org) likewise advises against putting cotton swabs or other objects in a child's ear canal.
Consider a swim cap. Caps designed to cover the ears, combined with earplugs, provide excellent protection. Some children prefer this option as it keeps both ears protected throughout an entire swim or lesson.
What are the signs and symptoms of swimmer's ear in children?
Watch for ear itching, pain when the ear is touched, a plugged or full feeling, drainage, and temporary hearing loss — early signs let you treat it before it worsens. Early recognition of swimmer's ear allows for prompt treatment and prevents progression to more serious complications. (Your pediatrician can confirm the diagnosis.) Watch for these signs in your child:
Early stages: Itching in the ear canal, mild discomfort, or a feeling of fullness or pressure in the ear. Your child might mention their ear feels "plugged" or complain of slight itchiness. At this stage, preventative ear drops and careful drying are often enough to stop infection from developing.
Moderate infection: Pain that worsens when the outer ear is touched or when chewing, yellow or greenish drainage from the ear, temporary hearing loss, visible swelling in the ear canal, or a sensation of fullness. Your child may tug at their ear frequently or complain that the ear "hurts."
Severe infection: Significant ear pain, fever, extensive swelling, swollen lymph nodes near the ear, or full-ear erythema. In rare cases, untreated infection can spread, causing serious complications.
When should you see a doctor for swimmer's ear?
See a doctor if ear pain lasts more than a few hours, you notice drainage, your child has a fever, or symptoms don't improve within 48 hours of careful drying.
Home treatment for early-stage swimmer's ear: If your child has mild itching or discomfort and you suspect water in the ear (not infection), you can try gentle drying and preventative ear drops. Ensure the child avoids further water exposure for 24-48 hours. Use warm (not hot) drops and have your child lie on their side with the affected ear up while you apply them.
However, see a doctor if:
- Ear pain persists for more than a few hours
- You notice drainage (clear, yellow, or greenish)
- Symptoms don't improve within 48 hours of preventative care
- Your child has fever
- The ear canal appears visibly swollen or red
- Your child has hearing loss or tinnitus
Never place anything in the ear canal at home if you suspect infection—this includes over-the-counter drops or home remedies. A healthcare provider must examine the ear to determine if infection is present and prescribe appropriate treatment. Infections require antibiotic ear drops, and in some cases, oral antibiotics if the infection is severe or spreading.
Can kids swim with swimmer's ear?
No — children with an active swimmer's ear infection should stay out of the water during treatment, usually for 7 to 10 days, because swimming can worsen the infection and delay healing. If your child has confirmed swimmer's ear infection, they should avoid water exposure during treatment. Swimming with an infected ear can worsen infection and delay healing. Most doctors recommend keeping the ear completely dry for at least 7-10 days after treatment begins.
Once a child recovers from swimmer's ear, they can return to water activities with enhanced preventative measures. Use earplugs consistently, apply preventative drops after each swim, and dry ears thoroughly. Many children never have a recurrence if these preventive steps are followed faithfully.
Do earplugs really prevent swimmer's ear?
Yes — well-fitted earplugs are highly effective at keeping water out of the ear canal, but they work best when combined with post-swim drying and preventative drops. Yes, when properly fitted and inserted, earplugs are highly effective at preventing water from entering the ear canal. The key is ensuring they create a proper seal. Custom-molded earplugs, available from your child's doctor or an audiologist, provide the best fit and protection. Over-the-counter foam and silicone earplugs are also effective if inserted correctly.
However, earplugs are not foolproof. Improper insertion, damaged earplugs, or earplugs that shift during swimming can allow water to enter. Always combine earplugs with post-swim ear drying and preventative drops for maximum protection. If your child frequently gets swimmer's ear despite earplugs, consult your doctor about other protective options.
How is swimmer's ear treated medically?
Doctors typically treat swimmer's ear with prescription antibiotic or antifungal ear drops, and most children recover fully within 7 to 10 days when the full course is completed. When a doctor confirms swimmer's ear infection, treatment typically involves antibiotic or antifungal ear drops applied directly to the ear canal. Your doctor will examine the ear, possibly using an otoscope, to assess the severity and rule out complications. In some cases, the ear canal may be cleaned first to remove debris and drainage, allowing the drops to reach affected areas more effectively.
Most children recover fully within 7-10 days of starting appropriate treatment. It's important to complete the full course of drops as prescribed, even if symptoms improve earlier. Stopping treatment prematurely can lead to recurrence or worsening infection.
Severe infections might require oral antibiotics in addition to ear drops. Rarely, if infection spreads beyond the ear canal, hospitalization may be necessary. However, prompt treatment of early-stage swimmer's ear prevents these serious complications.
What are the key takeaways for parents?
Swimmer's ear is largely preventable: dry ears after every swim, use earplugs and preventative drops, skip cotton swabs, and seek care early when symptoms appear. Swimmer's ear is preventable. By teaching your child good ear-care habits and staying vigilant about drying and protection, you can significantly reduce their risk. If infection does occur, prompt medical attention ensures quick recovery and prevents complications. Remember that thousands of children enjoy swimming and water activities without recurring infections when parents implement consistent preventive measures.
Combine earplugs, careful post-swim drying, preventative ear drops, and immediate medical attention for symptoms, and your child can safely enjoy all the benefits of water activities—from swim lessons to summer fun—without the worry of painful ear infections.
📚 Authoritative Sources
- CDC — Healthy Swimming & Water Safety: public-health guidance on recreational water illnesses and safe swimming habits.
- AAP HealthyChildren — Water Safety: pediatrician-backed advice on ear care and protecting young swimmers.
- American Red Cross — Water Safety: general water-safety practices for families during the swim season.