Swimmer’s ear vs middle ear infection: what’s the difference, and what should you do?

As the outdoor swimming season gets underway, ear problems are among the most common reasons people seek specialist care. Many patients arrive at The Harley Street ENT Clinic unsure whether they have swimmer’s ear or a middle ear infection.

The two conditions can feel surprisingly similar, yet they have different causes, different treatment pathways and different implications for your hearing. Understanding the distinction matters, not least because the wrong approach can make either condition significantly worse.

What is swimmer’s ear?

Swimmer’s ear, known clinically as otitis externa, is an infection of the outer ear canal, the passage that runs from the eardrum to the outside of your ear. It develops when water becomes trapped in the canal, creating a warm, moist environment in which bacteria or fungi can flourish.

Swimming is the most common trigger, particularly in outdoor pools, lakes and open water, but you do not need to be a regular swimmer to develop it. Anything that disrupts the natural protective environment of the ear canal can create the conditions for otitis externa, including aggressive ear cleaning, the use of cotton buds, and the use of hearing aids or in-ear headphones.

The symptoms tend to be localised to the outer ear. You may notice itching inside the canal, which often comes first, followed by pain that worsens when you tug gently on the outer ear or press on the small cartilage flap in front of the ear canal.

Redness, swelling and a feeling of blockage are common. In more severe cases, discharge can develop, and hearing may temporarily muffle because swelling narrows the canal. Unlike a middle ear infection, the eardrum is not involved.

What is a middle ear infection?

A middle ear infection, or otitis media, is a distinct condition. Here, the infection is behind the eardrum, in the air-filled space that connects to the back of the nose and throat via the Eustachian tube. It most often follows a viral illness, such as a common cold, which can cause the Eustachian tube to become inflamed and blocked. Fluid then builds up in the middle ear, creating the conditions for a bacterial or viral infection to take hold.

The symptoms of a middle ear infection feel quite different when you know what to look for. Ear pain tends to be deeper and more pressure-like, rather than the surface tenderness of swimmer’s ear. You might notice a significant drop in hearing, a sense of fullness in the ear, or the sensation that sounds are muffled or distant. Tinnitus is not uncommon.

In some cases, the eardrum may perforate, providing temporary pain relief, and a blood-stained discharge may follow. Feeling unwell, running a temperature or experiencing dizziness alongside ear symptoms all point towards a middle ear problem rather than an outer ear infection.

How can you tell the two apart?

The simplest self-check is the tug test. Gently pulling the outer ear or pressing on the tragus – the small projection in front of the ear canal – often causes noticeable pain if the outer canal is infected. In a middle ear infection, manipulating the outer ear in this way does not typically reproduce or worsen the pain.

Another useful indicator is context. If your symptoms developed shortly after swimming, particularly in outdoor or public pools, swimmer’s ear is the more likely culprit. If symptoms follow a cold, a bout of sinusitis or an upper respiratory tract infection, a middle ear problem is more probable.

That said, self-diagnosis has clear limits, and the two conditions can occasionally occur simultaneously. The safest course, particularly if symptoms are worsening, hearing loss is significant, or you have a history of ear problems, is to seek a proper assessment from an ENT specialist.

What treatment does each condition require?

Swimmer’s ear is typically treated with antibiotic or antifungal ear drops applied directly into the canal. One challenge is that drops need to reach the site of infection, which can be difficult if swelling or debris blocks the way. In these situations, microsuction, a gentle, precise technique using a fine suction probe under direct visualisation, can safely and quickly clear the canal, allowing treatment drops to work as they should.

At The Harley Street ENT Clinic, microsuction is performed by experienced ENT specialists and is far gentler than syringing or ear irrigation. Keeping the ear dry throughout treatment is important; a cotton wool ball lightly coated in petroleum jelly can help during showering.

Middle ear infections follow a different treatment logic. Some may resolve without antibiotics, particularly when a viral cause is likely, and the initial approach can be watchful waiting alongside appropriate pain relief.

When symptoms are severe, prolonged, or accompanied by a high temperature, antibiotic treatment is indicated, along with a nasal decongestant. If fluid persists behind the eardrum for several weeks – a condition known as glue ear – further investigation is warranted, and in some cases, an outpatient procedure under a topical local anaesthetic may be recommended to drain the fluid and restore normal hearing.

When should you seek specialist care?

You should seek a specialist opinion if ear pain is severe or worsening, if hearing loss is more than mild, if symptoms have lasted longer than a few days without improvement, if you are planning to fly, or if you have a perforated eardrum and are unsure whether it is safe to swim or use ear drops. A history of repeated ear infections, whether outer or middle ear, is also worth investigating properly rather than managing each time reactively.

As the swimming season opens, it is worth remembering that prevention is straightforward. Drying the ears gently after swimming, tilting the head to allow water to drain and avoiding the use of cotton buds can all reduce the risk of otitis externa.

For those prone to swimmer’s ear, custom-fitted swimmer’s earplugs are worth discussing with a specialist.

At The Harley Street ENT Clinic, our specialists can assess both outer and middle ear conditions quickly and accurately, provide appropriate treatment, including microsuction where needed, and offer clear guidance on whether swimming should be paused and for how long or whether it is safe to fly. If you are concerned about ear symptoms, booking a consultation is the most reliable way to get the right answer.

Call The Harley Street ENT Clinic on 020 7224 2350 during our opening hours (Monday to Friday 8am to 7pm) to arrange an urgent appointment with one of our ear specialists. We’ll ensure that you’re assessed, tested and treated quickly when it matters most.