Your ear aches, it feels full, and you are not sure whether to blame last weekend's swim or the cold you just got over. The two most likely culprits, swimmer's ear and a middle ear infection, can feel similar but are actually different problems in different parts of your ear, and they are treated differently too.
The good news: you can usually tell them apart with one simple test. Here is how to know which one you are dealing with and what to do about it.
What is swimmer's ear vs. an ear infection?
The fastest way to tell them apart is location. Swimmer's ear (medically called acute otitis externa) is an infection of the outer ear canal, the tube that runs from your eardrum to the outside of your head. A middle ear infection (acute otitis media) sits behind the eardrum, deeper inside.
Swimmer's ear usually starts when water lingers in the ear canal after swimming, creating a warm, moist environment where bacteria thrive. A middle ear infection more often follows a cold or other upper respiratory illness, when congestion lets fluid and germs build up behind the eardrum.
Both are common. Swimmer's ear alone accounts for an estimated 2.4 million U.S. health-care visits per year, while acute otitis media is the single most common reason children in the U.S. are prescribed antibiotics.
How to tell them apart: the tug test
When people search "swimmer's ear vs. ear infection," they usually want one clear distinguishing sign. Here it is: gently pull on your outer ear or press the little flap of cartilage in front of the canal (the tragus).
If that makes the pain noticeably worse, it points to swimmer's ear. If touching the ear does not change the pain and the ache feels deep and internal, it points to a middle ear infection.
- Swimmer's ear: pain worsens when you tug the outer ear or press the tragus; often itching and discharge; usually no fever
- Middle ear infection: deep ear pain not affected by touching the ear; frequently follows a cold; often comes with fever
- Swimmer's ear: outer ear canal; middle ear infection: behind the eardrum
What causes each one?
Swimmer's ear has two main triggers: excess moisture, classically from swimming, and trauma, most often from cotton swabs. Both strip away or break down the ear canal's natural protective barrier, opening the door to infection. The leading bacteria are Pseudomonas aeruginosa and Staphylococcus aureus, and up to about 10% of infectious cases are caused by fungus rather than bacteria.
Middle ear infections usually develop differently. They typically follow a cold or upper respiratory infection, when the tube that drains the middle ear gets blocked and fluid collects behind the eardrum. The common culprits there are bacteria such as Streptococcus pneumoniae and Haemophilus influenzae.
Who gets them, and how long do they last?
Swimmer's ear can affect anyone who gets water trapped in the ear, but it peaks in school-age kids: incidence is highest in children aged 5 to 9 and 10 to 14. Still, this is not just a childhood problem, more than half of all swimmer's ear visits occur in adults aged 20 and older.
Middle ear infections skew younger. About 80% of children have at least one episode, with the peak between 6 and 24 months of age.
With proper treatment, both conditions typically improve within a few days to a couple of weeks. By definition, swimmer's ear comes on quickly, generally within about 48 hours, and is diagnosed when there is canal inflammation plus that telltale tenderness when the outer ear or tragus is touched.
How is each treated?
Swimmer's ear is usually treated with antibiotic eardrops applied directly into the canal. Topical drops are the first-line treatment for an uncomplicated case, and professional guidelines note that oral antibiotics have limited usefulness and should not be used routinely. Good pain control matters too. Keeping the ear dry while it heals helps the medication work.
Middle ear infections are managed differently. Depending on age and severity, a clinician may recommend watchful waiting with pain relief, or oral antibiotics. Because the infection sits behind the eardrum, eardrops alone cannot reach it.
This is exactly why getting the right diagnosis matters: the correct treatment depends on which part of the ear is infected. A clinician can look inside the ear and confirm which one you have.
When to see a doctor
Ear pain is worth a professional evaluation, especially if you cannot tell which type you have, because the treatments differ. See a clinician promptly if pain is severe, if you have drainage from the ear, if symptoms last more than a day or two, or if you develop a fever.
Seek urgent care if you have intense pain with swelling or redness spreading to the outer ear or the skin around it, dizziness or hearing loss, or if you have diabetes or a weakened immune system, since untreated outer ear infections can spread. When in doubt, get it checked, ears are not something to guess on.
Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before starting any new skincare treatment, especially if you have underlying health conditions, are pregnant, or are taking medications.
