A ruptured eardrum happens when something tears or punctures the thin membrane separating your ear canal from your middle ear. The most common causes are middle ear infections, sudden pressure changes, and physical injury from objects pushed into the ear. Most perforations heal on their own within a few weeks, though some take months.
Middle Ear Infections
Ear infections are the leading cause of ruptured eardrums, especially in children. When bacteria or viruses infect the middle ear (the small air-filled space behind your eardrum), fluid and pus build up. That fluid has nowhere to go. As pressure mounts, it reduces blood flow to the eardrum itself, weakening the tissue. Eventually the membrane tears.
The rupture is usually preceded by intense, escalating ear pain. Ironically, many people feel immediate relief once the eardrum actually breaks, because the built-up pressure drains out. You may notice a sudden flow of fluid or pus from the ear, sometimes mixed with blood. The pain drops sharply, but hearing in that ear typically gets muffled.
Pressure Changes (Barotrauma)
Your eardrum needs roughly equal air pressure on both sides to stay intact. A small tube called the eustachian tube connects your middle ear to the back of your throat and normally equalizes that pressure every time you swallow or yawn. When the tube gets blocked or can’t keep up with rapid pressure shifts, the imbalance can stretch and eventually tear the eardrum.
Air travel is the most common trigger. As the plane descends, cabin pressure rises quickly, and if your eustachian tube can’t open fast enough, the eardrum gets pushed inward. Scuba diving poses the same risk in reverse: water pressure increases rapidly as you descend, and divers who go down too quickly without equalizing can perforate the membrane. Driving through mountain roads with significant altitude changes can also cause it.
You’re at higher risk for pressure-related ruptures if you’re congested from a cold, allergies, or a sinus infection. Swelling in the nasal passages makes it harder for the eustachian tube to open. Diving while congested is particularly dangerous because equalizing becomes nearly impossible.
Objects in the Ear Canal
Pushing anything into the ear canal can puncture the eardrum directly. Cotton swabs are the most frequent offender. A study published in the journal Pediatrics found at least 35 emergency room visits per day in the U.S. for cotton swab injuries in children’s ears alone, tracked over 20 years. Kids also insert bobby pins, pen caps, and other small objects while trying to clean out wax or just out of curiosity.
Adults aren’t immune. Using a cotton swab, hairpin, or any narrow object to scratch an itch or dig out earwax can push too deep. The eardrum sits only about 2.5 centimeters from the ear canal opening, so it doesn’t take much to reach it. Even a slight jab at the wrong angle can create a perforation.
Loud Blasts and Direct Impact
A sudden, intense wave of air pressure can rupture the eardrum mechanically. Research from the Defense Technical Information Center estimates that a fast-rising overpressure of about 5 psi is enough to tear some human eardrums, and at 15 psi, roughly half of all eardrums would fail. Sources of this kind of pressure wave include explosions, gunfire at close range, and fireworks detonating nearby.
A hard slap or blow directly over the ear can also do it. The palm of a hand striking the ear traps and compresses air in the canal, creating a pressure spike against the membrane. Deploying car airbags produce a similar rapid compression. Contact sports occasionally cause ruptures through the same mechanism.
What It Feels Like
The most noticeable symptoms of a ruptured eardrum are a sharp pain at the moment of rupture, followed by hearing loss in the affected ear. The hearing loss is usually partial, not total, and sounds may seem muffled or distant. Many people describe a ringing or buzzing (tinnitus) that starts right after the tear.
Drainage from the ear is common, especially with infection-related ruptures. The fluid can be clear, bloody, or yellowish if pus is involved. Some people feel dizzy or off-balance because the middle ear plays a role in spatial orientation, and exposing it to outside air disrupts that system temporarily.
If the rupture was caused by an infection, the pain often improves dramatically once the membrane breaks. If it was caused by trauma or pressure, the pain may linger alongside a feeling of fullness in the ear.
How Ruptured Eardrums Heal
Most ruptured eardrums heal without treatment within a few weeks. The membrane regrows from the edges of the tear inward, similar to how skin heals over a wound. Smaller perforations close faster, sometimes within days. Larger tears or those in certain locations on the membrane can take several months to fully seal.
During healing, keeping the ear dry is critical. Water entering the middle ear through the hole can cause or worsen infection. You’ll typically need to avoid swimming and take care during showers, often using a cotton ball coated in petroleum jelly as a plug.
If the perforation doesn’t close on its own, a surgical repair called tympanoplasty can patch the hole using a small piece of your own tissue, usually taken from nearby. The procedure is generally outpatient.
Risks of an Unhealed Perforation
A perforation that stays open long-term leaves the middle ear exposed to bacteria and debris from the ear canal, increasing the risk of chronic or recurring infections. Over time, dead skin cells can migrate through the hole and accumulate behind the eardrum, forming a growth called a cholesteatoma. This cyst-like mass starts small but can expand, gradually eroding the tiny bones responsible for hearing and potentially damaging the facial nerve that runs through the area. Cholesteatomas don’t resolve on their own and require surgical removal.
Persistent hearing loss is also a concern. The eardrum vibrates to transmit sound to the middle ear bones, and a hole disrupts that vibration. The larger the perforation, the greater the hearing loss. Once the membrane heals or is repaired, hearing usually returns to normal or near-normal levels, though scarring on the healed membrane can slightly affect sound transmission.