Ear Infections in Adults: Swimmer's Ear vs. Middle Ear Infection, Symptoms, and When You Need Antibiotics

Written by Dr. Casey Dean, DO, Board-Certified Family Medicine Physician | Medically reviewed by Dr. Kathryn Kline, MD | Trinity Family Medicine

Last medically reviewed: October 2026

About the author: Dr. Casey Dean is a board-certified family medicine physician (ABFM) who diagnoses and treats acute ear pain, respiratory infections, and other urgent-care concerns for adults across Texas via primary care and telehealth.

Quick answer: Swimmer's ear (otitis externa) is an infection of the outer ear canal that typically causes pain when you pull on the outer ear or press the tragus, the small flap in front of the canal. A middle-ear infection (otitis media) affects the space behind the eardrum and usually causes deep ear pain, pressure, and muffled hearing, often after a cold. Uncomplicated swimmer's ear is usually treated with medicated eardrops, while a middle-ear infection may improve with pain relief alone or need an oral antibiotic, depending on severity. An ear exam is often needed to tell the two apart reliably.

About this review: Medical review — Dr. Casey Dean, DO, board-certified in family medicine (ABFM). Clinical focus — adult ear pain, acute infections, and other urgent primary-care concerns. Practice — Trinity Family Medicine, a direct-pay telehealth practice serving patients across Texas; visits start at $49.99 and can be booked at trinitymedtx.com or 817-932-4022. Care options — telehealth assessment, treatment when clinically appropriate, and guidance on when an in-person ear exam is necessary. Last reviewed October 26, 2026.

An ear infection is not just a childhood problem. Adults get them too — and the two most common types, an outer-ear infection (otitis externa, better known as swimmer's ear) and a middle-ear infection (otitis media), are treated in almost opposite ways. According to the CDC, acute otitis externa alone accounts for roughly 2.4 million U.S. health-care visits a year. About 53% of those visits are in adults aged 20 and older, so this is very much an adult condition. Knowing which type you have matters, because one is usually treated with antibiotic eardrops placed directly in the canal, while the other often needs no antibiotic at all. This guide explains how to tell them apart, what actually helps, and the warning signs that mean you should be seen in person today.

Quick Summary: Key Facts at a Glance

Key takeaway: Swimmer's ear and a middle-ear infection cause pain in the same place but are different infections in different parts of the ear, and treating them correctly starts with figuring out which one you have.

Emergency warning: Severe ear pain with facial weakness, confusion, a high fever, or foul-smelling drainage — particularly in someone with diabetes or a weakened immune system — can signal a dangerous infection spreading beyond the ear and needs urgent, in-person medical care.

What Are the Two Main Types of Adult Ear Infection?

Adults mainly get two kinds of ear infection, and they are defined by where in the ear the problem is. The outer ear canal (the tube from the opening to the eardrum) is the site of otitis externa, or swimmer's ear. The air-filled space behind the eardrum is the site of otitis media, a middle-ear infection. A third, less common problem is simple earwax (cerumen) buildup, which can cause fullness and muffled hearing but is not an infection.

The distinction is not academic. In otitis externa, the canal itself is inflamed and a clinician can usually see redness, swelling, or debris at the opening. In otitis media, the canal often looks normal and the trouble is behind the eardrum, where it can only be confirmed by looking at the eardrum through an otoscope. That difference drives everything else — including whether antibiotics belong in the ear or in a pill, and whether a video visit can safely assess your symptoms.

What Does Swimmer's Ear (Otitis Externa) Feel Like?

Swimmer's ear causes canal pain that is often intense and gets worse when you move the ear. Itching, a feeling of fullness, and muffled hearing are common too. The 2014 American Academy of Otolaryngology–Head and Neck Surgery Foundation (AAO-HNSF) clinical practice guideline — endorsed by the American Academy of Family Physicians in September 2014 — defines the diagnosis by two things together. The first is the fairly sudden start (generally within 48 hours) of symptoms like ear pain, itching, or fullness over the previous three weeks. The second is physical signs of an inflamed canal, such as tenderness when the tragus or outer ear is pressed or pulled.

Most cases in North America are bacterial. Despite the nickname, you don't have to swim to get it: the AAO-HNSF guideline lists aggressive earwax removal (which strips away wax that normally protects against moisture), skin conditions, minor trauma from cotton swabs or earbuds, water irrigation, and hearing-aid use among the triggers. It is more common in warm, humid climates and in people who spend time in water — which makes it a familiar summer complaint across Texas, though it occurs year-round.

A clinical pearl worth remembering: if pulling gently on your outer ear or pressing the tragus sharply increases the pain, that points toward swimmer's ear (an outer-canal problem) rather than a middle-ear infection — a simple self-check you can do before your visit. This is a clue, not a diagnosis, and a clinician should still confirm it.

What Does a Middle-Ear Infection (Otitis Media) Feel Like?

A middle-ear infection causes deep, throbbing pain behind the eardrum, often with muffled hearing and a sense of pressure. Unlike swimmer's ear, the pain usually does not change much when you wiggle your outer ear. It frequently develops a few days into a cold, an allergy flare, or a sinus infection. That is because the Eustachian tube — the small channel that drains and ventilates the middle ear — becomes swollen and blocked, letting fluid and germs build up behind the eardrum. Lying down can make the pressure and pain worse, and some adults run a low fever. If the eardrum ruptures to relieve the pressure, the sharp pain may suddenly ease and be replaced by drainage.

Because the middle ear sits behind the eardrum, it cannot be seen just by looking into the ear opening. Confirming otitis media requires viewing the eardrum through an otoscope — which is exactly why this type can be harder to assess on a video call than swimmer's ear.

Swimmer's Ear vs. Middle-Ear Infection: How Can You Tell Them Apart?

The fastest way to tell them apart is the tragus test and the timing. Use this comparison as a guide, not a substitute for an exam.

Can you tell which ear infection you have without an exam? Not reliably. Symptoms can suggest the type — pain that worsens when you move the outer ear points toward swimmer's ear, while deep pain after a cold points toward a middle-ear infection — but they cannot confirm it. A clinician often needs to look into the ear canal and at the eardrum to be sure and to choose the right treatment.

Other conditions can masquerade as an ear infection, so symptoms alone are never the whole story. Jaw-joint (TMJ) problems, dental infections, a sore throat radiating to the ear, eczema or psoriasis of the canal, earwax impaction, a foreign body, and shingles affecting the ear nerves can all cause ear pain — which is one more reason a clinician should confirm the cause rather than assuming every earache is an infection.

Do You Need Antibiotics for an Ear Infection?

Not always — and for swimmer's ear, the antibiotic usually belongs in the ear, not in a pill. The AAO-HNSF guideline recommends topical (directly applied) eardrops as the first-line treatment for uncomplicated swimmer's ear. It advises clinicians not to prescribe oral antibiotics initially unless the infection has spread beyond the ear canal or specific risk factors are present. The reasoning is dosing: drops deliver medication directly to the infected canal at concentrations the guideline describes as 100 to 1,000 times stronger than what an oral antibiotic achieves there, while avoiding whole-body antibiotic exposure. The guideline also notes that the available eardrops — antibiotic, steroid-combination, or acidifying antiseptic — are all effective, with no clear advantage shown for one class over another, so the choice depends on factors such as whether the eardrum is intact, cost, and your preference.

What this means in plain English: for a typical case of swimmer's ear, the right prescription is usually medicated drops plus something for pain — a pill-form antibiotic is the exception, reserved for infections that are spreading or for higher-risk patients.

Middle-ear infections are handled differently. A meaningful share of adult cases are viral or settle on their own, so pain control is the foundation, and an oral antibiotic — most commonly amoxicillin when one is warranted — is added based on how severe and persistent your symptoms are and your individual risk factors. Antibiotic decisions in adults are individualized, because the strongest guideline evidence for "watch-and-wait versus treat" comes from studies in children.

One important safety note on medications: antibiotic eardrops can cause local stinging or itching, acidifying drops can burn an inflamed canal, and oral antibiotics like amoxicillin can cause rash, stomach upset, or diarrhea. There is one more consideration: if your eardrum may be perforated (has a hole in it), some drops are unsafe for the inner ear, so a non-ototoxic preparation — one that won't harm hearing or balance — is used instead. A clinician should review these trade-offs with you before you start.

How Do You Treat Ear Pain at Home While You Wait?

Start with pain control and keeping the ear dry. The AAO-HNSF guideline emphasizes that adequate pain relief — typically oral pain relievers (analgesics) such as acetaminophen or ibuprofen, dosed to the severity of the pain — is a central part of treatment, not an afterthought, because it lets you rest and function. A warm compress against the ear can add comfort. If you have swimmer's ear or any ear drainage, keep water out of the ear while it heals.

What you should not do is dig in your ear with cotton swabs, fingers, or any object. Swabs push wax and debris deeper, scratch the delicate canal skin, and are a leading trigger for swimmer's ear in the first place. Earwax normally protects the canal, so the CDC advises against trying to remove it yourself.

How Do You Prevent Swimmer's Ear?

Prevention comes down to keeping the ear canal dry and intact. The CDC's Healthy Swimming guidance recommends keeping water out with a bathing cap, earplugs, or custom swim molds, and drying your ears thoroughly after swimming or showering by toweling off and tilting each ear downward to let water drain; a hair dryer on the lowest heat and speed, held several inches away, can help. Avoid putting swabs, fingers, or other objects in the ear, and don't try to remove earwax yourself. The CDC notes that some people benefit from over-the-counter drying drops after swimming, and a 1:1 mix of rubbing alcohol and white vinegar is a common home version. But these drops should not be used by anyone with ear tubes, a known or suspected perforated eardrum, an active outer-ear infection, or ear drainage — so check with a clinician first.

Do You Need Testing or an Ear Exam?

Usually the diagnosis is clinical, but seeing the ear canal and eardrum is what confirms which infection you have. For straightforward swimmer's ear, the external signs — canal redness, swelling, tenderness, and drainage — are often visible and the history is characteristic. For a suspected middle-ear infection, an otoscope exam of the eardrum is the key step, and swabs or cultures are generally reserved for infections that fail to improve, keep recurring, or occur in higher-risk patients. The guideline advises re-evaluation if symptoms don't improve within 48 to 72 hours of starting treatment, to confirm the diagnosis and rule out another cause.

When Should You See a Doctor — and Can Telehealth Help?

See a clinician for ear pain that is severe, lasts more than a day or two, comes with fever or drainage, affects your hearing, or keeps returning. A visit lets a clinician pin down which type of infection you have, rule out mimics like TMJ pain or a foreign body, and match the treatment to the cause — drops for the canal, a pill only when it's truly needed, and pain relief either way.

A telehealth visit is a practical first step for many ear complaints. A telehealth clinician can assess whether your symptoms are consistent with swimmer's ear or a middle-ear infection and review your history and risk factors. When appropriate, they can prescribe pain control and medicated eardrops or an oral antibiotic — and tell you plainly when an in-person ear exam is the safer path. That caveat matters: a middle-ear infection is confirmed by viewing the eardrum through an otoscope, which a video call cannot do. So if the diagnosis is uncertain, if wax is blocking the view, or if red-flag symptoms are present, an in-person exam or ENT referral is the right call.

Trinity Family Medicine offers physician-led telehealth visits to patients across Texas, with urgent-care visits starting at $49.99 and the same doctor each time. You can book online at trinitymedtx.com or call 817-932-4022. For related upper-airway infections that often precede a middle-ear infection, see our guides to sinus infection symptoms and when antibiotics are needed and how doctors tell a viral sore throat from strep. If dizziness is your main symptom rather than pain, our guide to vertigo causes and the Epley maneuver may fit better.

When Is an Ear Infection an Emergency?

Some ear infections are dangerous and need urgent care. A rare but serious complication called malignant (necrotizing) otitis externa — where "malignant" means aggressive and fast-spreading, not cancer — occurs mainly in older adults with poorly controlled diabetes or a weakened immune system. It happens when the infection, usually from the bacterium Pseudomonas aeruginosa, spreads from the canal into the surrounding bone. Warning signs include severe pain that is worse at night, persistent foul-smelling drainage, and — if it reaches the nerves at the base of the skull — facial weakness or drooping, severe headache, or confusion. Any of these, or a high fever with feeling very unwell, warrants same-day evaluation, and new facial weakness or confusion is a call-911 situation.

Can You Treat an Ear Infection During Pregnancy?

Yes, but medication choice matters. Pain relief with acetaminophen is generally considered acceptable in pregnancy, while anti-inflammatory pain relievers (NSAIDs) like ibuprofen are usually avoided in the third trimester. For swimmer's ear, topical eardrops act locally with minimal absorption and are often suitable, and amoxicillin is a commonly used oral antibiotic in pregnancy when one is needed. Because individual circumstances and trimester matter, confirm any treatment with your clinician before starting it.

Frequently Asked Questions

The Bottom Line

Most adult ear infections fall into one of two camps: swimmer's ear in the outer canal, usually treated with medicated eardrops and pain relief, and a middle-ear infection behind the eardrum, where pain control comes first and an oral antibiotic is added only when it's genuinely needed. Pulling on your ear is the quickest at-home clue — pain that worsens points to the canal — but an exam is what confirms the diagnosis and matches the right treatment to it. If your ear pain is severe, persistent, feverish, draining, or recurrent, a telehealth visit is a reasonable first step to get evaluated and treated, with in-person care reserved for uncertain cases and red-flag symptoms.

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