Earwax Removal and Ear Cleaning on Koh Tao

Why does earwax matter more on a dive island ?

Because wax that sits harmlessly at home becomes a genuine obstacle when you need to equalise several times a day. A canal that is partly occluded makes equalising harder, traps water against the canal wall after every dive, and sets up the conditions for the outer ear infections that are already common here.

There is also a mechanical problem specific to diving. Wax that completely blocks the canal creates a sealed air space between the blockage and the eardrum, which cannot equalise on descent. That produces pain and can injure the eardrum from the outside in, which is an unusual mechanism but a real one.

Why do blocked ears appear on holiday ?

Because water changes the wax. Repeated wetting and drying makes wax swell and then compact against the canal wall, which is why people who have never had an ear problem at home arrive on day three of a dive course unable to clear one side.

Attempts to fix it make it worse. Cotton buds push wax inward and compact it further, while scratching the canal lining and creating the breach that infection needs. The habit is close to universal and it is the single most counterproductive ear practice there is.

Signs it is wax rather than something else

• gradual blockage rather than sudden onset
• worse after swimming or showering
• muffled hearing without pain
• pulling the outer ear does not hurt
• one side only, or much worse on one side
• a feeling of fullness, sometimes with your own voice sounding loud

Those are pointers rather than a diagnosis. Infection, fluid behind the eardrum and pressure injury can all feel similar, which is why examination comes before treatment — the distinctions are covered in our guide to ear problems for divers.

What does professional removal involve ?

An examination with a digital otoscope first, to confirm what is actually there and to check the eardrum is intact. That matters because the method chosen depends on both, and because several approaches are unsafe if the eardrum is perforated.

Removal itself is quick. Most people describe it as odd rather than uncomfortable, and the improvement in hearing is immediate and disproportionate to how minor the procedure is. Divers frequently report that equalising becomes dramatically easier afterwards, which is the practical reason to have it done before a course rather than midway through one.

At our clinics wax is removed by ear irrigation once the eardrum has been checked. The fee for the procedure is quoted before it is done.

What should you not do ?

Softening drops have a legitimate place, but the timing matters. Using them the night before a dive can make a partial blockage into a complete one as the wax swells, which is the opposite of what you wanted. Ask rather than improvising the day before a course.

What happens if you dive on a blocked ear

It is worth being specific about the failure mode, because the abstract warning does not land. On descent, the air space behind the blockage cannot equalise against rising pressure. The eardrum is pushed inward, the tissue behind it swells and may bleed, and in the worse cases the drum tears.

The immediate result is pain and the end of that dive. The downstream result is weeks out of the water waiting for a perforation to heal, a course of treatment, and in some cases lasting effects on hearing. A twenty-minute appointment beforehand is a considerably better trade than any of that.

When should you have it done ?

Before the course, not during it. The ideal time is the day you arrive or the day before you start diving, which leaves room if anything else is found and avoids losing a morning out of the water.

Flying with a blocked ear

The same mechanics that make diving unwise apply to the flight home, with a longer and less controllable descent. A blocked ear that cannot equalise during an aircraft's descent is painful for twenty minutes or more, and it can injure the eardrum in the same way a dive does.

If you have a blockage and a flight coming up, come in beforehand rather than hoping. It is a short appointment, and it is considerably better than discovering the problem somewhere over the Gulf of Thailand with no option but to continue descending.

What about prevention ?

Mostly by leaving your ears alone, which is a genuinely unsatisfying answer and the correct one. Wax is protective — it repels water, traps debris and keeps the canal lining healthy. Removing it preventively leaves the canal more vulnerable to the infections that are already common here.

1. Stop using cotton buds, which is the single most effective change.
2. Dry the outer ear after swimming by tilting the head each way.
3. Do not dig at water you can feel trapped; it usually drains.
4. Consider drying drops if you swim daily and are prone to problems, after asking.
5. Have wax removed properly when it builds up, rather than attempting it yourself.
6. Treat an ear that will not equalise as a reason to stop, not to push harder.

For background, the NHS guidance on earwax build-up is a sound reference, and the day-to-day rules on when to sit out of the water are in our guide to when not to dive.

Children and ear cleaning

Children get blocked ears on holiday for the same reasons adults do, with two differences. They are less able to describe what they are feeling, so the first sign is often that they stop responding to you from across the room or become irritable in the water. And their ear canals are narrower, so a smaller amount of wax causes a bigger problem.

Never attempt removal on a child at home. The combination of a narrow canal, a moving target and a cotton bud is how eardrums get damaged. If a child is pulling at an ear, hearing less well, or has become reluctant to swim, have it looked at.

Should you come in ?

• Starting a dive course and have had equalising trouble before → come in beforehand
• Blocked or muffled hearing on one side → come in before diving
• Ear pain, discharge or sudden hearing loss → same day, this is not simple wax
• Dizziness with an ear problem → same day
• Used cotton buds and now it is worse → come in; this is common
• No symptoms, ears clear, equalising easily → leave them alone