Swimmer's ear after the beach: prevention, drops and when to see a doctor

Quick answer: what is swimmer's ear and how do you handle it?

Swimmer's ear is otitis externa — an infection or inflammation of the outer ear canal (the tube from the opening to the eardrum), triggered when water trapped after swimming softens the canal's skin and lets bacteria or fungi grow. The classic signs are itching, then pain that is notably worse when you pull on the outer ear or press the little flap in front of it, a blocked or full feeling, and sometimes discharge. Prevention is keeping the canal dry; treatment for anything more than mild is usually prescription ear drops from a doctor. Do not push cotton buds into the ear, which damages the skin and makes it worse.

So the essentials: it comes from trapped water, it hurts when you tug the ear, you prevent it by drying the ears, and you treat established cases with proper ear drops from a doctor rather than home poking.

What swimmer's ear actually is

The outer ear canal is normally protected by a thin layer of water-repellent earwax and slightly acidic conditions that discourage germs. Repeated or prolonged water exposure — especially warm sea or pool water sitting in the canal — washes away that protection, waterlogs and softens the skin, and creates a warm, moist environment where bacteria (or sometimes fungi) multiply, inflaming the canal. That is otitis externa, or swimmer's ear. It is distinct from a middle-ear infection (otitis media), which sits behind the eardrum and is more common in children with colds; swimmer's ear is the outer-canal, water-related one.

So the mechanism is simple: trapped water strips the ear's natural defences and lets infection take hold in the canal. Knowing this explains both why swimmers get it and why keeping the canal dry is the key to preventing it.

• Otitis externa = infection of the outer ear canal, not the middle ear.
• Trapped water washes away protective wax and waterlogs the skin.
• Warm, moist canal conditions let bacteria or fungi grow.

How to prevent it

Prevention centres on keeping the ear canal dry and its defences intact. After swimming, tilt your head to each side to let water drain, and dry the outer ear gently with a towel (not by poking inside). You can encourage drying by tugging the earlobe in different directions, or use a hairdryer on a low, cool setting held a little away from the ear. For people prone to it, over-the-counter acidic or alcohol-based drying ear drops (or a home mix on medical advice) used after swimming help restore the canal's acidity and evaporate moisture. Avoid cotton buds entirely, and don't over-clean earwax, which is protective.

So the preventive routine is: drain, gently dry the outside, optionally use drying drops if you're prone, and never insert anything into the canal. These habits keep the canal dry and defended, which stops most swimmer's ear before it starts.

Easing a mild case

For a very mild, early case — slight itch or blocked feeling without significant pain or discharge — keeping the ear dry and using over-the-counter acidic drying drops may settle it, along with a warm compress and over-the-counter pain relief for comfort. Keep water out of the ear (avoid swimming, and protect it when showering) while it recovers. However, do not persist with home care if it is not improving quickly or if pain builds — swimmer's ear that has become an established infection needs medicated ear drops that only a doctor or pharmacist can supply.

So mild, early cases may respond to drying and comfort measures, but the threshold for seeking help is low: real pain, discharge, or lack of improvement means it is time for professional treatment rather than more home remedies.

When to see a doctor

See a doctor if you have: significant or worsening ear pain, discharge (pus or fluid) from the ear, reduced hearing or a fully blocked ear, redness or swelling spreading to the outer ear or face, fever, or symptoms not improving within a day or two of home care. People with diabetes or weakened immune systems should seek help early, as they can develop more serious infections. Treatment is usually antibiotic/antifungal-plus-steroid ear drops, sometimes with the canal cleaned by a professional; oral antibiotics are needed only if the infection has spread.

So the rule is to get established swimmer's ear treated promptly rather than toughing it out. It responds well to the right ear drops, but left untreated it can worsen and spread — and the correct drops need a professional assessment.

Swimmer's ear vs a middle-ear infection

It helps to distinguish the two ear infections people confuse. Swimmer's ear (otitis externa) is in the outer canal, is water-related, and hurts characteristically when you pull the outer ear or press the flap in front of it; it affects swimmers of any age. A middle-ear infection (otitis media) sits behind the eardrum, is usually linked to colds and congestion (not water), is most common in young children, and doesn't hurt when you tug the ear. The treatments differ, so the distinction matters — though both should be assessed by a professional if significant.

So if the pain is water-related and worsens when you move the outer ear, think swimmer's ear; if it follows a cold, especially in a child, think middle-ear infection. Either way, meaningful ear pain, discharge or hearing loss deserves a proper look rather than guesswork.

A note: general information, not medical advice

This guide is general safety and wellbeing information for beachgoers, not medical advice. Reactions to stings, infections and heat vary between people, and severe or worsening symptoms — spreading pain, difficulty breathing, high fever, or signs of a serious allergic reaction — need urgent professional medical care.

If you are unsure, seek advice from a lifeguard, pharmacist or doctor, and call your local emergency number for anything severe. When in doubt, get it checked.