Ear crackling is usually caused by your eustachian tubes opening and closing as they equalize pressure in your middle ear. These narrow tubes connect the space behind your eardrum to the back of your throat, and they normally open briefly every time you swallow or yawn. When they’re inflamed, blocked, or sluggish, the opening and closing becomes irregular, and you hear crackling, popping, or clicking. But eustachian tube issues aren’t the only explanation. Several other conditions can produce that same persistent sound.
Eustachian Tube Dysfunction
This is the most common reason for ongoing ear crackling. Your eustachian tubes are supposed to stay closed most of the time, popping open momentarily when you swallow or yawn to let air into the middle ear and keep pressure balanced on both sides of your eardrum. When the tubes swell from a cold, allergies, or a sinus infection, they don’t open and close smoothly. The result is a crackling or popping noise, often paired with a feeling of fullness, muffled hearing, or mild discomfort.
Most cases resolve on their own once the underlying congestion clears. You can speed things along by staying hydrated, using a saline nasal rinse, and chewing gum to encourage frequent swallowing. If allergies are the trigger, an over-the-counter antihistamine may help reduce the swelling. Nasal steroid sprays are sometimes recommended, though a meta-analysis of randomized controlled trials found that the evidence for their effectiveness in eustachian tube dysfunction specifically is not strong. Neither steroid sprays nor placebo treatments showed a clear advantage in normalizing middle ear pressure across the studies reviewed.
Earwax Buildup
Too much earwax in the ear canal can produce crackling noises when you move your jaw. Every time you chew, talk, or yawn, your jaw shifts the shape of the ear canal slightly, and hardened or impacted wax moves against the canal walls or near the eardrum. The sound is often a rustling or crinkling that comes and goes with jaw movement.
Resist the urge to dig it out with a cotton swab, which usually pushes wax deeper. A few drops of mineral oil or an over-the-counter ear drop designed to soften wax can help it migrate out naturally over several days. If the crackling persists or your hearing feels blocked, a clinician can remove the wax safely with irrigation or a small suction tool in a quick office visit.
Middle Ear Muscle Spasms
Two tiny muscles live inside your middle ear: one attached to a bone near the eardrum, and another attached to the smallest bone in your body, the stapes. When either of these muscles contracts involuntarily, you hear rhythmic clicking, crackling, buzzing, or thumping. This condition, called middle ear myoclonus, is less common than eustachian tube problems but distinctive because the sound has a pattern to it.
The spasms are not timed to your heartbeat, which helps distinguish them from pulsatile tinnitus (where you hear a whooshing sound in rhythm with your pulse). They can come and go without warning and affect one or both ears. For some people the episodes are brief and infrequent. For others, they’re persistent enough to interfere with concentration or sleep. Treatment options range from muscle relaxants to, in rare cases, a minor surgical procedure to release the spasming muscle.
Jaw Joint Problems
Your temporomandibular joint sits directly in front of each ear and acts like a sliding hinge connecting your jawbone to your skull. When this joint is inflamed, misaligned, or has a worn disc, it can produce clicking, grating, or crackling sounds that feel like they’re coming from inside the ear. The proximity of the joint to the ear canal makes it easy to confuse the two.
TMJ-related crackling tends to happen when you open your mouth wide, chew, or clench your jaw. You might also notice jaw stiffness, pain around the ear, or headaches. Soft foods, gentle jaw stretches, avoiding excessive gum chewing, and a night guard for teeth grinding are the first-line approaches. Most TMJ flare-ups improve within a few weeks with these adjustments.
How to Pop Your Ears Safely
If the crackling comes with a feeling of pressure or fullness, gently forcing air into the eustachian tubes can help. The most well-known technique is the Valsalva maneuver: pinch your nostrils shut, close your mouth, and gently push air out as if you’re trying to exhale through your blocked nose. You should feel a soft pop as the tubes open and pressure equalizes. The key word is “gently.” Blowing too hard can damage your eardrum or push fluid deeper into the middle ear.
Another option is swallowing while pinching your nose, which creates a mild vacuum that can pull the tubes open. Simply swallowing water, yawning widely, or chewing gum all encourage the tubes to open naturally without any forced pressure.
A few people should avoid the Valsalva maneuver entirely: anyone with a retinal condition or intraocular lens implants (such as after cataract surgery), because the maneuver raises pressure in the eyes. People with heart valve disease, coronary artery disease, or a history of stroke should also use caution.
When Crackling Signals Something Serious
On its own, ear crackling is rarely dangerous. But certain accompanying symptoms warrant prompt attention. If you notice a sudden drop in hearing in one ear, whether all at once or over a few days, treat it as a medical emergency. Sudden sensorineural hearing loss can sometimes present alongside ear fullness, crackling, dizziness, or ringing. The NIDCD considers it urgent because treatment delayed more than two to four weeks is significantly less likely to reverse permanent hearing loss.
Other red flags include ear pain that worsens rather than improves, fluid or blood draining from the ear, persistent dizziness, or crackling that lasts more than a few weeks without an obvious cause like a cold. Crackling that started after a head injury also deserves evaluation. In these cases, an ear, nose, and throat specialist can use pressure testing and imaging to identify the exact problem and rule out anything structural.