Ear infections cause pain, pressure, and often temporary hearing changes. The specific symptoms depend on which part of the ear is affected: the middle ear (the most common type), the outer ear canal, or the inner ear. Each produces a distinct pattern of symptoms, and recognizing them quickly matters, especially in young children who can’t describe what they’re feeling.
Middle Ear Infection Symptoms
A middle ear infection, known medically as otitis media, happens when fluid builds up behind the eardrum and becomes infected. The hallmark symptoms in adults are ear pain or pressure, trouble hearing, and sometimes fluid draining from the ear. The pain tends to feel deep inside the ear rather than on the surface, and it often worsens when lying down because the fluid shifts and puts more pressure on the eardrum.
Hearing loss from middle ear fluid typically falls in the mild to moderate range. Sounds may seem muffled, like you’re hearing through a wall. This is almost always temporary and resolves as the fluid clears, though in some cases it can take weeks after the pain itself is gone.
Fever is common, particularly in children. The CDC flags a temperature of 102.2°F (39°C) or higher as a reason to seek medical care. Adults with middle ear infections may run a low-grade fever or none at all.
What Ear Drainage Tells You
When pressure from the infection builds high enough, the eardrum can rupture. This often brings a sudden drop in pain followed by thick yellow fluid leaking from the ear. While a burst eardrum sounds alarming, it usually heals on its own within a few weeks. The drainage itself is actually a sign that pressure has been released.
The color of ear fluid matters. Yellow or greenish discharge typically points to an active bacterial infection. If the fluid is clear, it’s more likely related to allergies, eczema, or fluid buildup without bacterial infection. Bloody discharge, especially after a head injury, can signal something more serious and warrants immediate medical attention.
Signs in Babies and Toddlers
Young children get ear infections far more often than adults, and they can’t always tell you their ear hurts. Instead, watch for these behavioral cues:
- Tugging or rubbing at the ear, often on one side
- Unusual fussiness or crying, especially when lying flat
- Trouble sleeping or waking more frequently at night
- Reduced appetite, since swallowing changes pressure in the ear and can increase pain
- Not responding to sounds the way they normally do
- Fever
A child who suddenly becomes irritable during or right after a cold is a classic presentation. The infection often develops because swelling from the cold blocks the small tube connecting the middle ear to the throat, trapping fluid behind the eardrum.
Outer Ear Infection (Swimmer’s Ear)
An outer ear infection affects the ear canal itself rather than the space behind the eardrum. It’s commonly called swimmer’s ear because water trapped in the canal creates a breeding ground for bacteria. The symptoms overlap with a middle ear infection but have one reliable distinguishing feature: pain that gets worse when you tug on the outer ear or press on the small flap in front of the ear canal. A middle ear infection won’t cause pain with that movement.
Outer ear infections also tend to cause itching in the canal, redness you can sometimes see at the ear opening, and swelling that may partially close off the canal. The pain often builds gradually over a day or two rather than coming on suddenly.
Inner Ear Infection Symptoms
Inner ear infections are less common but produce the most disruptive symptoms. A condition called labyrinthitis involves inflammation of the part of the inner ear responsible for both hearing and balance. The onset is often sudden, and the defining symptom is vertigo: the sensation that the room is spinning around you, even when you’re perfectly still.
Along with vertigo, inner ear infections commonly cause nausea and vomiting, significant balance problems that make walking difficult, involuntary eye movements, and hearing loss on the affected side. The vertigo can be severe enough to keep you in bed for days. Unlike the dull ache of a middle ear infection, the primary complaint here is dizziness and disorientation rather than pain.
How Doctors Confirm an Ear Infection
When a doctor looks inside your ear with a handheld scope, they’re checking the eardrum for specific signs. A bulging eardrum is the strongest indicator of an active middle ear infection. The eardrum may also appear red, cloudy, or swollen, with its normal surface landmarks obscured by inflammation. In some cases, the doctor will use a small puff of air to see if the eardrum moves normally. A stiff, unmoving eardrum suggests fluid is trapped behind it.
For outer ear infections, the diagnosis is more straightforward. The canal itself looks red and swollen, and touching or manipulating the ear reproduces the pain.
How Long Symptoms Last
Most middle ear infections begin to improve within two to three days, whether or not antibiotics are used. The sharp pain typically fades first. Muffled hearing and a sense of fullness in the ear can linger for several weeks as residual fluid slowly drains. If symptoms worsen after the first few days, or pain and fever persist beyond 48 to 72 hours, that’s a sign the infection may need antibiotic treatment or that something else is going on.
Outer ear infections generally take about a week to clear with prescription ear drops. Inner ear infections are the slowest to resolve. The intense vertigo from labyrinthitis usually improves within one to three weeks, but mild balance issues can persist for months as the brain recalibrates.
Warning Signs of a Serious Complication
Rarely, a middle ear infection can spread to the bone behind the ear, a condition called mastoiditis. This is more common in children and requires urgent treatment. The warning signs include pain, redness, or swelling behind the ear (which may cause the ear to visibly stick out), high fever, severe headache, and increasing hearing loss. Without treatment, mastoiditis can lead to permanent hearing damage or meningitis.
Symptoms that should prompt you to seek care promptly include a fever at or above 102.2°F, pus or discharge from the ear, symptoms lasting more than two to three days without improvement, or any swelling behind the ear.