The most reliable at-home clue is pain when you tug your earlobe or press the small flap of cartilage (the tragus) at the front of your ear canal. That tenderness is a hallmark of swimmer’s ear, also called otitis externa, and it separates this condition from other types of ear infections. If that simple test hurts, and you’ve also noticed itching or a feeling of fullness in your ear, swimmer’s ear is the likely culprit.
Early Signs Most People Notice First
Swimmer’s ear usually starts subtly. The first symptom is almost always itching inside the ear canal, sometimes with a faint sense of warmth or irritation. At this stage, there’s little to no pain, and many people dismiss it entirely or assume they just have water trapped in their ear.
Within a day or two, the itching typically gives way to a dull ache that sharpens when you chew, yawn, or touch your ear. You may notice mild redness around the opening of the ear canal and a small amount of clear, odorless fluid draining out. Hearing on the affected side can start to feel muffled, not because of damage to the ear itself, but because the canal is swelling shut and blocking sound from reaching the eardrum.
How Symptoms Progress Without Treatment
Left alone, swimmer’s ear tends to get worse rather than resolve on its own. The mild itch and ache of the first couple of days can escalate into intense, constant pain that radiates along the jaw or into the side of the neck. The ear canal becomes visibly red and swollen, sometimes enough that you can see puffiness when you look in a mirror. Discharge changes from clear to yellowish or greenish, and it often develops a noticeable smell.
At its most advanced stage, the pain can be severe enough to interfere with sleep. The lymph nodes in front of or behind the ear may swell and feel tender to the touch. Some people develop a low-grade fever. By this point, the canal is usually swollen nearly shut, causing significant, temporary hearing loss in that ear.
The Tug Test: A Quick Self-Check
If you’re unsure whether your ear pain is coming from the outer ear canal or deeper inside, try two things. First, gently pull your earlobe downward and away from your head. Second, press inward on the tragus. If either motion causes a sharp spike in pain, the infection is almost certainly in the ear canal, which is where swimmer’s ear lives. A middle ear infection, by contrast, sits behind the eardrum and won’t respond to external pressure this way.
Swimmer’s Ear vs. a Middle Ear Infection
These two conditions overlap enough to cause confusion, but they behave differently. Swimmer’s ear pain gets worse when you touch, tug, or press on the outer ear. A middle ear infection tends to hurt more when you lie down, and the pain is deeper, harder to pinpoint. Middle ear infections also commonly follow a cold or upper respiratory illness, while swimmer’s ear usually follows water exposure or physical irritation of the ear canal.
Fever is uncommon with uncomplicated swimmer’s ear but typical with middle ear infections, especially in children. If you see drainage, that also helps tell them apart: swimmer’s ear produces discharge that leaks from the ear canal itself, while drainage from a middle ear infection usually means the eardrum has ruptured, which is a different situation entirely.
What Actually Causes It
Swimming is the classic trigger, but it’s not the only one. Anything that disrupts the thin layer of earwax lining the canal can set the stage. Earwax is slightly acidic and acts as a natural barrier against bacteria. When water sits in the canal for a prolonged period, it softens and washes away that protective layer, raises the pH, and creates a warm, moist environment where bacteria thrive. In North America, about 98 percent of cases are bacterial, with two species accounting for most infections.
Plenty of people who never swim get swimmer’s ear. Common non-swimming triggers include:
- Cotton swabs, hairpins, or fingernails used to clean or scratch the ear canal, which create tiny breaks in the skin
- Earbuds or hearing aids worn for long stretches, which can trap moisture and cause micro-abrasions
- Eczema or other skin conditions that affect the ear canal, making the skin more fragile and prone to cracking
Even heavy sweating during exercise or spending time in humid climates can be enough to tip the balance if the ear canal doesn’t dry out fully.
What to Expect From Treatment
Swimmer’s ear is treated with prescription ear drops, typically applied two to four times a day for about a week. Relief usually starts within one to three days, and uncomplicated cases clear up within seven to ten days. If the ear canal is too swollen for drops to reach the infected area, a doctor may place a small wick (a thin sponge) inside the canal to help draw the medication deeper.
During treatment, keeping the ear dry is essential. That means no swimming, and protecting the ear from water during showers. Over-the-counter pain relievers can help manage discomfort in the first couple of days while the drops take effect.
Red Flags That Need Urgent Attention
In rare cases, swimmer’s ear can spread beyond the ear canal into the surrounding bone, a serious complication called necrotizing (or malignant) otitis externa. This is most common in people with diabetes, weakened immune systems, or those undergoing chemotherapy.
Warning signs include deep ear pain that worsens when you move your head, persistent foul-smelling drainage that doesn’t improve with treatment, difficulty swallowing, and any weakness in the muscles of your face. Fever combined with confusion, facial drooping, or voice changes alongside ear symptoms warrants emergency care. These complications are uncommon in otherwise healthy people, but they escalate quickly when they do occur.