The most reliable signs of an ear infection are ear pain that worsens over hours, muffled hearing, and a feeling of fullness or pressure deep inside the ear. You may also develop a low-grade fever, notice fluid draining from the ear, or feel off-balance. The specific combination of symptoms depends on which part of your ear is affected, and a few simple observations at home can help you figure out what’s going on before you see a doctor.
Middle Ear vs. Outer Ear Infections
The two most common types of ear infections affect different structures, and they feel noticeably different. A middle ear infection (otitis media) develops behind the eardrum, usually following a cold or upper respiratory illness. The infection travels up the tube that connects your throat to your middle ear, causing fluid to build up in a space that’s normally air-filled. This produces a deep, throbbing pain, pressure, and muffled hearing. You might hear ringing or buzzing.
An outer ear infection (otitis externa, often called swimmer’s ear) affects the ear canal itself. It’s commonly triggered by water that stays trapped in the canal after swimming or bathing. The hallmark is itching that progresses to pain, along with redness or swelling around the ear canal opening. The skin inside and around the ear may feel warm to the touch.
A Simple Test You Can Do at Home
There’s one quick check that helps distinguish outer ear infections from middle ear infections. Gently tug on your outer ear, or press on the small flap of cartilage (the tragus) at the front of your ear canal. If this makes the pain significantly worse, you likely have an outer ear infection. Middle ear infections cause deep pain that doesn’t change much when you pull on the ear, because the infection sits behind the eardrum rather than in the canal itself.
This isn’t a formal diagnosis, but it gives you useful information to share with your doctor and helps you understand what you’re dealing with.
What Ear Discharge Tells You
Not every ear infection produces drainage, but when it does, the color and consistency offer clues. Cloudy or white fluid is the most common type and usually signals that your body is actively fighting a bacterial infection. Green or yellow discharge points more strongly toward a bacterial cause, with the color coming from dead cells and immune debris. Bright yellow fluid typically indicates pus from active inflammation.
Clear, watery drainage can mean a burst eardrum or swimmer’s ear. A ruptured eardrum sounds alarming, but it often brings immediate pain relief because it releases the pressure that’s been building. The eardrum usually heals on its own within a few weeks. If the discharge has a foul smell, or if you notice any blood mixed in, that warrants a prompt medical visit.
Fever and Other Full-Body Symptoms
Ear infections can cause fever, though not always. When fever does develop, it tends to be more common and higher in children than in adults. A temperature under 102.2°F (39°C) with mild ear pain is generally considered manageable at home in the short term. Temperatures above that threshold, especially combined with severe pain, suggest a more aggressive infection that may need treatment sooner.
You may also experience headache, fatigue, nausea, or mild dizziness. The balance organs sit right next to the middle ear, and fluid buildup can disrupt the signals those organs send to your brain about your body’s position. This is why ear infections sometimes cause a sense of unsteadiness or mild vertigo, particularly when you move your head quickly.
Recognizing Ear Infections in Babies and Toddlers
Young children get ear infections far more often than adults, and they can’t tell you what hurts. According to the National Institute on Deafness and Other Communication Disorders, the key behavioral signs to watch for include tugging or pulling at one or both ears, unusual fussiness and crying (especially when lying down, which increases ear pressure), and trouble sleeping. You might also notice your child seems clumsier than usual, has trouble with balance, or doesn’t respond to quiet sounds the way they normally would.
Fever is more common in infants and younger children with ear infections. Fluid draining from the ear is another clear indicator. If your baby is under 3 months old and has a temperature of 100.5°F (38°C) or higher, that calls for an immediate conversation with your pediatrician regardless of the suspected cause.
What Your Doctor Looks For
When a doctor examines your ear with an otoscope (the handheld light they use to look inside your ear canal), they’re checking the eardrum for specific changes. A healthy eardrum is thin, pearly gray, and slightly translucent. An infected middle ear pushes the eardrum outward, making it visibly bulge. The membrane turns red and swollen, and the normal landmarks your doctor usually sees disappear behind the inflammation. A bulging, red eardrum is the strongest visual indicator of an active middle ear infection.
For outer ear infections, your doctor will look for redness and swelling in the canal itself, sometimes with visible debris or discharge. They may also gently move your ear to confirm that the pain is canal-based rather than behind the eardrum.
When Antibiotics Are Needed (and When They’re Not)
Many ear infections clear on their own, and the CDC endorses a “watchful waiting” approach for certain cases. Children aged 2 and older with mild pain, a temperature below 102.2°F, and symptoms lasting less than two days in one or both ears can often be monitored for two to three days before considering antibiotics. For children between 6 months and 23 months, watchful waiting applies only when a single ear is infected and symptoms are mild.
The logic is straightforward: your immune system handles many ear infections without help, and unnecessary antibiotics contribute to resistance. Your doctor may write a prescription but ask you to hold off on filling it unless symptoms worsen or don’t improve within two to three days. If pain increases, fever rises above 102.2°F, or fluid starts draining, it’s time to start treatment.
Adults with ear infections follow a similar logic. Mild symptoms that are improving don’t always need antibiotics, but persistent or worsening pain, significant hearing changes, or high fever typically do.
Signs the Infection Has Spread
Untreated or poorly treated ear infections can, in rare cases, spread to the bone behind the ear, a condition called mastoiditis. The warning signs are distinct: pain, tenderness, or swelling behind the ear (not inside it), redness of the skin in that area, the ear appearing to stick out more than usual, high fever, increasing headache, and hearing loss. On darker skin tones, the redness behind the ear may be harder to spot, so swelling and tenderness are more reliable indicators.
Mastoiditis requires urgent medical attention. Other red flags at any stage include a stiff neck, a fever above 104°F (40°C), severe ear pain that comes on suddenly, or any confusion or extreme lethargy, particularly in children. These symptoms suggest the infection may be affecting areas beyond the ear and need immediate evaluation.