Swimmer's Ear: Why Your Ear Hurts After Swimming

You get out of the pool feeling great, and by that evening your ear itches. By the next morning it aches when you chew, tug on your earlobe, or press the little flap in front of the opening. It feels like water is still trapped in there, but no amount of hopping on one foot shakes it out.

That is most likely swimmer's ear, the common name for otitis externa, an infection of the outer ear canal. It is one of the most frequent reasons Americans visit a doctor in the summer, and it has nothing to do with how clean the pool was. The U.S. Centers for Disease Control and Prevention estimates that swimmer's ear drives about 2.4 million health care visits in the United States every year, costing roughly half a billion dollars in treatment. Children ages 7 to 14 get it most often, but adults who swim, surf, or even shower with water trapped in the ear can get it too.

What swimmer's ear actually is

Your outer ear canal is a narrow, warm tunnel lined with skin. Normally, a thin layer of earwax protects that skin and keeps it slightly acidic, an environment bacteria dislike. When water sits in the canal, it softens the skin, washes away protective wax, and raises the pH. Tiny cracks form in the soggy skin, and bacteria or fungi move in.

The usual culprit is Pseudomonas aeruginosa, a bacterium that thrives in warm, moist places, including pools, lakes, hot tubs, and even tap water. Fungi cause about 10 percent of cases, more often in people who have used antibiotic ear drops repeatedly or who live in humid climates. Importantly, swimmer's ear is not the same as a middle ear infection, the kind children get with colds. Swimmer's ear affects the canal outside the eardrum, which is why it hurts when you touch or move the outer ear, and why it usually does not come with a fever or a cold.

How to tell it apart from water in your ear

Trapped water feels annoying but fades within hours and does not hurt. Swimmer's ear follows a pattern:

• Itching inside the ear canal, often the first symptom
• Pain that worsens when you pull the earlobe or press the tragus, the small flap in front of the canal
• A feeling of fullness or muffled hearing, as if the ear is plugged
• Clear or yellowish discharge, sometimes with a faint odor
• Redness and swelling of the outer ear in more advanced cases

Pain that gets worse over two to three days, rather than better, is the clearest sign this is an infection and not just leftover water.

What actually treats it

Swimmer's ear rarely needs oral antibiotics, and it almost never needs to be waited out. The standard treatment is prescription antibiotic ear drops, sometimes combined with a steroid to calm swelling. Most people feel noticeably better within 48 to 72 hours, though the full course usually runs 7 to 10 days.

A few practical points make treatment work better:- Keep the ear dry. No swimming, hot tubs, or dunking your head until your doctor clears you, typically 7 to 10 days after symptoms start. Showering is fine if you keep water out with a cotton ball coated in petroleum jelly placed at the ear opening.

• Use the drops correctly. Lie on your side with the sore ear up, fill the canal, and stay there for 3 to 5 minutes so the medicine reaches the whole canal. Gently wiggling the earlobe helps it spread.
• Do not insert anything into the canal. No cotton swabs, ear candles, fingers, or home irrigation while it is infected. You risk pushing bacteria deeper or scratching the eardrum.
• Skip the home remedies if pain is significant. Over-the-counter pain relievers like ibuprofen or acetaminophen help with the ache, but vinegar or alcohol drops belong in prevention, not treatment of an active infection, and they sting badly on inflamed skin.

If the canal is so swollen that drops cannot get in, a doctor may place a small sponge-like wick in the ear to carry the medicine inward.

When it is more than a routine infection

Most cases are mild and resolve completely. Get medical care promptly, not eventually, if you notice any of these:

• Fever, or redness and swelling spreading beyond the ear onto the face or neck
• Severe pain that does not improve after 2 to 3 days of drops
• Hearing loss that persists after the pain fades, which can mean wax, debris, or swelling is blocking sound
• Diabetes or a weakened immune system. In these patients, swimmer's ear can rarely progress to malignant otitis externa, a deeper infection that spreads to the bone at the base of the skull. It is uncommon but serious, and it needs urgent treatment.
• A perforated eardrum, ear tubes, or ear surgery in your history. Standard drops and home remedies can be unsafe in these cases, so a doctor should direct treatment.

Also, see a clinician rather than self-treating if you are not sure the problem is swimmer's ear at all. A middle ear infection, a dental problem, or a jaw joint issue can all masquerade as ear pain.

How to prevent it next time

You do not have to give up swimming. A few habits cut the risk sharply:

• Dry your ears after every swim. Tilt your head to each side to let water drain, then gently dry the outer ear with a towel. A hair dryer on the lowest, coolest setting held at arm's length for a few seconds can help.
• Consider swim earplugs or a swim cap if you get swimmer's ear repeatedly, especially in lakes or crowded pools.
• Leave earwax alone. Wax is protection, not dirt. Never use cotton swabs inside the canal.
• A preventive drop can help frequent swimmers. A homemade mix of equal parts white vinegar and rubbing alcohol, a few drops in each ear after swimming, restores acidity and dries the canal. Use it only if your eardrums are intact, you have no ear tubes, and you have no active infection or ear pain.
• Skip the hot tub if you have a cut or irritation in or around the ear, and avoid putting your head under water in lakes after heavy rain, when bacterial counts run higher.

The bottom line

Swimmer's ear is your ear canal's skin rebelling after too much moisture: water softens the lining, bacteria move in, and the result is an itch that turns into a distinctive ache when you tug the earlobe. Antibiotic drops clear it in days, keeping the ear dry speeds healing, and simple habits like drying your ears and retiring the cotton swabs prevent most recurrences.

This article is for informational purposes only and is not medical advice. If you have ear pain, discharge, hearing loss, diabetes, or a weakened immune system, see a doctor promptly.