Ear equalisation, pressure and barotrauma

Your middle ear is an air-filled space behind the eardrum. A narrow Eustachian tube connects it to the back of the nose and throat, allowing pressure to balance with the surrounding water. During descent, water pressure rises around you. If air cannot pass through the tube, the middle-ear pressure lags behind, pulling the eardrum inward and causing the familiar blocked, pinched or painful feeling. Divers Alert Network identifies middle-ear barotrauma as the number 1 most common dive injury. It can occur while diving or flying.

The important distinction is timing. Equalisation difficulty is an early warning, not a challenge to overcome by descending further. A cold, allergy, nasal inflammation, recent respiratory infection or naturally narrow Eustachian tube may make clearing unreliable. A fast descent, poor head position, distraction or waiting until pain starts can add to the problem. The ascent is not automatically risk-free either: trapped air can expand, so pressure or unusual hearing symptoms deserve attention in both directions.

Symptoms can range from fullness, popping and mild discomfort to sharp pain. More concerning signs include reduced hearing, ringing, fluid or blood, spinning dizziness, nausea or discharge. Pain easing suddenly is not proof that everything is fine; a ruptured eardrum can relieve pressure while creating a new injury. For a useful overview of the decision boundary, read can failed equalisation cause a diving ear injury. Do not use this article to diagnose yourself, and do not put drops into the ear canal unless a clinician has advised that they are safe.

The safest habit is to equalise before discomfort, then repeat gently and frequently during descent. Begin at the surface or immediately before leaving it, and continue in small increments rather than waiting for a painful squeeze. Keep your descent slow enough to stop easily, stay close to your buddy or instructor, and signal early. Swallowing, yawning or moving the jaw can help open the Eustachian tubes. Many divers also use a taught, gentle clearing manoeuvre, but the exact technique should be demonstrated and practised in training rather than copied forcefully from a video.

Relaxation matters. Look slightly up, keep your body stable and avoid clenching your jaw. If one ear clears before the other, do not chase depth; pause and give the slower side time. A well-fitting mask, clear hand signals and an agreed stop signal reduce the temptation to carry on silently. Never treat a successful click as permission to descend rapidly: the pressure gradient changes continuously, especially in the shallow part of a descent.

DAN's guidance explains that equalisation normally occurs with little effort and that swallowing or yawning may facilitate it. It also warns that when obstruction has developed, forceful Valsalva attempts can injure the inner ear. That is why the useful rule is gentle, early and repeated—not hard, late and competitive. If you are unsure which habit to practise, ask an instructor to observe you in confined water before an open-water dive.

If you cannot clear your ears on descent, stop descending immediately. Signal your buddy or instructor, hold a stable position and move to the last depth that felt comfortable—often only a small distance shallower. Wait, breathe normally and try a gentle method once, without straining. If the ear remains blocked, end the descent and follow the team’s controlled ascent and exit plan. The correct answer to what to do when you cannot equalize while diving is never to push through pain or separate from the group.

At the surface, tell the dive leader exactly when the problem began, which ear was affected and whether there was pain, vertigo, hearing change, discharge or bleeding. Do not re-enter simply because the pain has faded. If symptoms are significant, worsening or persistent, arrange prompt medical assessment; an ENT clinician is particularly suitable for ear and sinus concerns. Seek urgent care for severe vertigo, sudden hearing loss, faintness, heavy bleeding or other alarming symptoms. For a concise stop-rule discussion, see what to do if you cannot equalize during a dive.

Do not use earplugs, insert objects into the ear or attempt increasingly forceful clearing. Avoid diving again until swelling or inflammation has resolved and a qualified clinician confirms that you can equalise adequately. The timing is individual: there is no responsible universal number of hours or days that can replace an examination. Keep a note of symptoms and any cold, allergy, medication or previous ear issue so the clinician can identify likely contributors.

A good decision starts before the boat leaves the pier. On the morning of a dive, ask whether you have nasal congestion, facial pressure, a sore throat, active allergy symptoms or an ear that still feels full. Check the health questionnaire honestly and tell the instructor about a previous squeeze, surgery, perforation, tinnitus or vertigo. A short briefing can cover the descent line, hand signals, buddy position and what happens if you need to stop. These simple details make it easier to choose safety without embarrassment.

Build equalisation into your dive plan rather than treating it as an emergency skill. Choose a descent that allows pauses, avoid being rushed by a group, and agree that either diver can end the dive. If a particular technique has been uncomfortable, ask for dry-land explanation and supervised, shallow practice; do not experiment with aggressive methods on a paid boat trip. Medication decisions belong with a doctor or pharmacist, because temporary relief may mask symptoms or create side effects that affect diving.

Use the same caution when planning travel. Flying, altitude changes and scuba diving all involve pressure changes, but advice for one is not automatically permission for the other. If you have ongoing ringing or balance symptoms, read when can I dive again after tinnitus or vertigo and obtain individual medical advice before booking.

An instructor can teach a controlled descent, improve communication and help you stop early. A dive operator can adapt the plan, but cannot declare an injured ear fit to dive. A GP can assess common symptoms; an ENT specialist can investigate the eardrum, hearing and balance when symptoms persist or recur. Ask what has healed, whether the Eustachian tube functions, and which signs mean you should return for review. A clinician’s clearance should be specific to your condition and the activity, not a casual assumption based on feeling better.

Your wider health matters too. Congestion is a reason to postpone, not something to conceal. If you are wondering can I scuba dive with a cold, use that guide as a starting point, then follow personalised advice. Insurance is a separate question from medical fitness: review exclusions, emergency transport and documentation before travel. The answer to does scuba insurance cover decompression sickness may not describe ear barotrauma, cancellation or treatment in your particular policy, so read the actual wording and ask the insurer.

Equalisation becomes safer when stopping is normal rather than dramatic. Brief your buddy, begin early, descend slowly and treat any pain as information. If the plan no longer feels comfortable, ending a dive is a successful safety decision—not a failed qualification or a wasted day. You can return to training or fun diving after the underlying issue is understood and your clinician says it is appropriate.

For every trip, keep the sequence simple: check your ears before entry, signal at the first problem, return to comfort, exit if it persists, document symptoms and seek help. This routine protects both your hearing and your enjoyment of the water.