The most reliable sign of an ear infection is ear pain that comes on quickly, often alongside muffled hearing or a feeling of fullness or pressure in the ear. Adults typically notice these two symptoms clearly, while children and infants give subtler clues like tugging at an ear, unusual fussiness, or trouble sleeping. You can’t confirm an ear infection at home since a proper diagnosis requires a clinician to look at the eardrum, but the symptoms below can tell you whether that visit is warranted.
Symptoms in Adults
Adult ear infections tend to announce themselves with a short list of hard-to-miss symptoms: sharp or dull pain inside the ear, a sensation of pressure or blockage, and reduced hearing on the affected side. You might also notice fluid draining from the ear, which signals that the eardrum has ruptured under pressure from trapped fluid. That sounds alarming, but small eardrum tears usually heal on their own and the pain often drops once the pressure releases.
Fever is possible but less common in adults than in children. Dizziness or a spinning sensation points to a different category of infection. When inflammation reaches the inner ear, it can disrupt the structures that control balance, causing vertigo, nausea, or unsteadiness that lasts days to weeks. This type of inner ear infection is distinct from the standard middle ear infection and needs its own evaluation.
Symptoms in Children and Infants
Children get ear infections far more often than adults, and younger kids can’t always describe what they feel. The behavioral clues matter just as much as the physical ones. Watch for a child who keeps touching, tugging, or rubbing one ear, especially if that habit appeared suddenly. A toddler who normally eats and sleeps well but becomes a reluctant eater and a restless sleeper may be dealing with ear pain that worsens when lying down, since that position increases pressure behind the eardrum.
Other signs in children include:
- Fever, which accompanies ear infections more frequently in kids than adults
- Increased crying or irritability that seems out of proportion to the situation
- Trouble responding to sounds, like not turning toward your voice or asking you to repeat things
- Loss of balance, particularly in toddlers who are still unsteady on their feet
- Fluid draining from the ear, which can look clear, yellowish, or slightly bloody
Infants may simply seem “off.” They can’t point to their ear or explain pressure, so unexplained fussiness paired with a recent cold is one of the most common patterns parents describe before a diagnosis.
Middle Ear vs. Outer Ear Infections
Not all ear infections are the same, and the distinction changes what you do about it. A middle ear infection happens behind the eardrum, usually after a cold or upper respiratory illness traps fluid in the small space behind it. An outer ear infection (swimmer’s ear) is an infection of the ear canal itself, the tube between the outside of your ear and your eardrum. It typically follows water exposure or minor skin damage from cotton swabs or earbuds.
There’s a simple way to get a rough idea of which type you’re dealing with. Gently pull on your outer ear or press on the small flap of cartilage (the tragus) at the front of your ear canal. If that causes sharp, immediate pain, it strongly suggests an outer ear infection. Middle ear infections generally don’t hurt more with external pressure because the problem is deeper inside. Outer ear infections also tend to make the ear canal visibly red or swollen, and the pain often gets worse when you chew or move your jaw.
What Ear Drainage Tells You
Fluid coming from the ear is worth paying attention to because its appearance gives clues about what’s happening. Thin, clear drainage can come from a middle ear where fluid has built up and found a way out through a small tear in the eardrum. Yellow or greenish discharge that looks thick or contains pus usually signals a bacterial infection, whether in the middle ear or the ear canal. Bloody drainage can happen when an eardrum ruptures or when inflamed skin in the ear canal breaks down.
Foul-smelling discharge is more concerning than odorless drainage and warrants a prompt visit to a clinician. The smell typically indicates a more aggressive bacterial process or a chronic infection that has been brewing longer than you realized.
How Doctors Confirm the Diagnosis
A clinician diagnoses an ear infection by looking at your eardrum with an otoscope, the handheld tool with a light and magnifying lens. They’re checking for specific things: a bulging eardrum, redness of the eardrum, or visible fluid behind it. In some cases, they’ll use a pneumatic otoscope, which puffs a small amount of air against the eardrum to see how well it moves. A healthy eardrum flexes easily. One with fluid trapped behind it barely moves.
Home digital otoscopes are available and can capture images of the ear canal, but they haven’t been validated as a reliable substitute for a trained clinician’s exam. Getting a clear view of the eardrum is harder than it looks, especially with earwax in the way, and interpreting what you see requires experience. These devices may be useful for sharing images with a telehealth provider, but self-diagnosing from them is unreliable.
Signs That Need Urgent Attention
Most ear infections resolve with time or a course of treatment, but a small number progress to something more serious. The complication to know about is mastoiditis, an infection that spreads from the middle ear into the bone just behind the ear. Its hallmark is pain, redness, or swelling behind the ear that can actually push the ear forward, making it visibly stick out. This is a medical emergency because untreated mastoiditis can lead to permanent hearing loss or spread to the membranes surrounding the brain.
Seek immediate care if you or your child develops swelling or tenderness in the bone behind the ear, a high fever that doesn’t respond to standard treatment, sudden facial weakness on one side, a stiff neck with headache, or an ear infection that keeps getting worse despite treatment. These patterns are uncommon, but recognizing them early makes a significant difference in outcomes.
When Pain Alone Is Enough to Act On
You don’t need to check every box on a symptom list to justify getting evaluated. Persistent ear pain lasting more than a day or two, especially following a cold, is reason enough. The same goes for ear pain with fever in a child under two, or any ear pain intense enough to interfere with sleep. Many ear infections, particularly in older children and adults, do clear on their own within 48 to 72 hours. But since there’s no reliable way to distinguish a self-resolving case from one heading toward complications without looking at the eardrum, the exam itself is the most useful next step.