Frequent swimming, humidity and water trapped in the ear canal can turn a beach or pool holiday into a painful outer-ear infection. Swimmer's ear, or acute otitis externa, affects the canal between the outer ear and eardrum. It is different from a middle-ear infection and from pressure injury after flying or diving, although symptoms can overlap.
Most cases are treatable, but putting objects or unsuitable drops into the ear can worsen injury. The practical plan is to keep ears dry, avoid canal trauma and seek an examination when pain, drainage or hearing change appears.
How swimmer's ear develops
The ear canal has a protective lining and wax that discourages bacterial growth. Repeated water exposure can soften that barrier. Scratching with cotton buds, fingernails, hairpins or ear-cleaning tools creates tiny breaks where bacteria can multiply. Earbuds, hearing aids and tightly fitting plugs may trap moisture or irritate skin when not cleaned and dried.
Typical symptoms include itch, fullness, reduced hearing, redness and pain that worsens when the outer ear is tugged or the small cartilage in front of the canal is pressed. Discharge may develop. These features suggest otitis externa, but a clinician must look inside to distinguish wax blockage, a foreign body, fungal infection, middle-ear disease, a perforated eardrum or a diving injury.
Pain after a dive accompanied by dizziness, sudden hearing loss or neurological symptoms is not routine swimmer's ear. Stop diving and seek urgent advice. The Thailand healthcare access guide can help locate an appropriate service.
Dry ears without inserting anything
After swimming, tip the head to each side and gently pull the earlobe in different directions to help water drain. Dry the outer ear with a towel. A hair dryer on the lowest heat and fan setting, held well away from the ear, may help evaporate remaining moisture. Stop if it causes discomfort.
Do not insert cotton buds, tissue, fingers, matchsticks or camera tools into the canal. They often push wax and debris deeper, scrape skin or perforate the eardrum. Ear candling does not remove water or infection and can cause burns and blockage.
If you repeatedly retain water, ask a clinician about well-fitting swim plugs and a bathing cap. Poorly fitting plugs can irritate the canal, and shared plugs can introduce contamination. Clean and dry reusable equipment according to its instructions.
Be cautious with drying drops
Commercial or clinician-recommended drying drops may help some people after swimming, but they are not safe for everyone. Do not use them if you have ear tubes, a known or possible perforated eardrum, ear drainage, current ear pain or previous ear surgery unless a clinician has specifically approved the product. Alcohol or acid in a drop can cause severe pain or damage when the eardrum is not intact.
Do not mix a homemade remedy in a hotel room when you cannot confirm ingredients or ear condition. Drops intended for wax, eyes or skin are not interchangeable. If symptoms have started, preventive drops are not a substitute for examination and appropriate treatment.
People with eczema, psoriasis or recurrent otitis externa may need an individual prevention plan. Treating skin inflammation and ensuring hearing aids fit well can be as important as drying after swimming.
When to stop swimming
Stop swimming when the ear becomes painful, starts draining or feels significantly blocked. Continued immersion maintains moisture and can wash away treatment. Avoid diving and do not equalise forcefully. Protect the ear from water during showering according to clinical advice, without pushing material deep into the canal.
A minor sensation of water usually clears, but pain lasting more than a day, worsening tenderness, new discharge or reduced hearing deserves assessment. Seek care sooner for diabetes, immune suppression, prior ear surgery or a history of severe ear infection. In these groups, infection can occasionally spread beyond the canal.
The guide to choosing an English-speaking clinic in Thailand offers useful communication questions. Ask whether the service can examine the eardrum and clean the canal safely rather than prescribing from symptoms alone.
Warning signs that need urgent care
Severe pain out of proportion, fever, swelling or redness spreading around or behind the ear, facial weakness, confusion, severe dizziness, sudden hearing loss or a very unwell appearance require urgent assessment. People with diabetes or immune suppression should not wait when pain is intense, especially if it is worse at night or associated with drainage.
Call 1669 for collapse, neurological symptoms or another severe emergency. The Thailand emergency numbers guide explains what to report. Sudden hearing loss is time-sensitive even without pain and should not be assumed to be water blockage.
Blood or clear fluid after a head injury, blast or deep object insertion is another urgent situation. Do not add drops or try to clear the canal.
What a clinician may do
The clinician will examine the outer ear, canal and eardrum. If swelling or debris blocks the view, careful cleaning may be required. Do not attempt this with hotel cotton buds or an irrigation kit. Irrigation is unsafe when the eardrum might be perforated and can aggravate some infections.
Treatment commonly uses prescription ear drops selected for the likely cause and eardrum status. A small wick may help drops reach a swollen canal. Oral antibiotics are not routinely needed for uncomplicated swimmer's ear, because topical treatment reaches the canal directly. They may be used when infection spreads, risk is higher or another diagnosis is present.
Ask how many drops to use, how long to keep the affected ear upward and how many days to continue. Warm the closed bottle in your hands rather than heating it, and keep the dropper tip clean. Complete treatment as directed even if pain improves early.
Pain relief and follow-up
Use an over-the-counter pain medicine only if it is normally safe for you and follow the label. Consider ulcers, kidney disease, blood thinners, pregnancy, allergy and other medicines. Do not place numbing drops in the ear unless prescribed, because eardrum status matters and pain suppression can hide progression.
Symptoms should start improving with appropriate treatment, but the expected timeline varies. Return if pain worsens, fever develops, swelling spreads, hearing deteriorates or there is no improvement in the period the clinician specified. Ask when it is safe to swim again and whether plugs are recommended.
If you are moving islands or flying soon, use the medical appointment checklist to record the diagnosis, drop name and follow-up plan. Air travel does not usually worsen an uncomplicated outer-ear infection in the same way as middle-ear pressure disease, but pain or uncertain diagnosis deserves individual advice.
Pool and beach habits that help
Choose visibly maintained pools and follow closure notices, though even well-managed water can remain in the ear canal. Shower before entering and avoid swallowing water for broader infection prevention. At the beach, do not assume salt water disinfects the ear. Sand and organic material can add irritation.
Limit repeated long swimming sessions if your ears are becoming itchy. Dry between sessions and allow irritated skin to recover. Do not remove protective earwax for cosmetic cleanliness. If wax repeatedly blocks water, have it assessed and removed safely before the trip rather than digging it out afterward.
The broader guide to what to do if you get sick in Thailand helps with clinic logistics. For swimmer's ear, the most useful details are water exposure, object or drop use, previous surgery and whether tugging the outer ear increases pain.
The bottom line
Prevent swimmer's ear by letting water drain, drying only the outside and leaving the canal alone. Stop swimming if pain or drainage begins. Do not use drying drops when the eardrum may be perforated or the ear has tubes, surgery, pain or discharge.
Most cases improve with correct local treatment. The reason to seek an examination is not that every earache is dangerous, but that the canal and eardrum cannot be assessed safely from symptoms alone. Severe pain, spreading swelling, sudden hearing loss or neurological signs should never be treated as simple trapped water.
Frequently Asked Questions
How can I get water out of my ear safely?
Tip your head, gently move the outer ear and dry only the outside. A hair dryer on the lowest setting held well away may help. Do not insert cotton buds, fingers or tools.
Can I use alcohol and vinegar drops after swimming?
Only if a clinician has confirmed they are appropriate. Do not use drying drops with ear tubes, possible eardrum perforation, drainage, pain or previous ear surgery.
Can I keep swimming with swimmer's ear?
Stop swimming when pain, drainage or significant blockage begins. Continued immersion can worsen moisture and interfere with treatment. Ask the clinician when it is safe to return.
When is ear pain urgent?
Seek urgent care for severe pain, fever, spreading redness, swelling behind the ear, facial weakness, severe dizziness, sudden hearing loss or symptoms in a person with diabetes or immune suppression.
Sources
Writer
Niran Chaiyasit
Niran Chaiyasit is a Thai health writer with a background in public health and a focus on travel health, disease prevention and healthcare access in Thailand. His work covers topics such as common illnesses, vaccinations, mosquito-borne diseases, food safety and practical health information for travelers and expatriates.
Medical review
Justin Brooks
Daniel Brooks is an American health writer with a background in health sciences and a focus on rehabilitation, musculoskeletal health and patient education. He writes about physiotherapy, injury recovery, pain management, preventive health and practical healthcare guidance for international patients and travelers.
