Ear infections are common, and most people will have at least one in their lifetime. The pain can be sharp, dull, or constant, and it often feels worse at night. Knowing whether you actually have an ear infection matters because treatment depends on the type and cause. Some ear infections clear up on their own, while others need antibiotics or a doctor’s care.
What Is an Ear Infection?
An ear infection is inflammation, usually caused by bacteria or a virus, in the middle ear or the outer ear canal. The medical name for a middle ear infection is otitis media. The medical name for an outer ear infection is otitis externa, often called swimmer’s ear.
Middle ear infections happen behind the eardrum. They often follow a cold or the flu. Fluid builds up in the space behind the eardrum, and if that fluid gets infected, it presses on the eardrum and causes pain.
Outer ear infections happen in the ear canal, the tube that leads from the outside of the ear to the eardrum. These are usually caused by water staying in the ear after swimming or showering, which creates a moist environment where bacteria grow.
What Are the Symptoms of an Ear Infection?
Symptoms differ depending on which part of the ear is infected.
Middle ear infection symptoms include:
- Ear pain, especially when lying down
- A feeling of fullness or pressure in the ear
- Muffled hearing
- Fever, often in children
- Fluid draining from the ear if the eardrum ruptures
Outer ear infection symptoms include:
- Pain when you pull on your earlobe or press on the small bump in front of your ear
- Itching inside the ear canal
- Redness or swelling of the ear canal
- Clear or yellow discharge
- Pain when chewing
Young children cannot always describe their symptoms. They may tug at their ear, cry more than usual, have trouble sleeping, or seem irritable. Fever is more common in children with middle ear infections than in adults.
How Do I Know If I Have an Ear Infection?
You cannot reliably diagnose an ear infection yourself. The eardrum and middle ear are not visible without a special instrument called an otoscope. A doctor uses this tool to look for redness, bulging, or fluid behind the eardrum.
Some signs point more strongly toward an ear infection. Pain that gets worse when you lie flat or when you chew can suggest a middle ear infection. Pain when you pull on your earlobe points toward an outer ear infection.
If you have ear pain with hearing loss, dizziness, or a feeling of fullness, you should see a doctor. If you have discharge from your ear, that also requires medical evaluation. Discharge can mean the eardrum has ruptured, which needs proper care to heal correctly.
What Causes an Ear Infection?
Middle ear infections usually start with a viral illness like a cold. The cold causes swelling in the eustachian tubes, the small passages that connect the middle ear to the back of the throat. When these tubes swell, fluid cannot drain from the middle ear. That trapped fluid becomes a breeding ground for bacteria.
Children get more middle ear infections than adults because their eustachian tubes are shorter and more horizontal. This shape makes drainage harder. As children grow, their eustachian tubes become more vertical, and infections become less frequent.
Outer ear infections are different. They happen when the protective skin inside the ear canal is damaged or stays wet for too long. Common causes include swimming, using cotton swabs, wearing hearing aids or earbuds for long periods, or having skin conditions like eczema or psoriasis.
When Should I See a Doctor for Ear Pain?
You should see a doctor if your ear pain is severe, lasts more than a couple of days, or comes with a fever. You should also see a doctor if you have discharge from your ear, hearing loss, or dizziness.
Children need medical attention sooner than adults. Take a child to the doctor if they have ear pain with a fever, if they are under six months old with any sign of ear discomfort, or if symptoms do not improve within two days.
Seek emergency care if you have severe pain that suddenly stops, which can indicate a ruptured eardrum. Also seek emergency care if you have swelling behind your ear, weakness in your face, or severe dizziness. These can be signs of a more serious infection spreading beyond the ear.
How Are Ear Infections Treated?
Treatment depends on the type and severity of the infection.
Middle ear infections: Many middle ear infections are viral and will resolve on their own within a few days. The body’s immune system clears the infection without antibiotics. For this reason, many doctors recommend a “watch and wait” approach for mild cases, especially in adults and older children.
Antibiotics are prescribed when the infection is bacterial, severe, or not improving after a few days. Amoxicillin is a common first-line antibiotic for middle ear infections. Symptoms usually improve within 48 to 72 hours of starting antibiotics.
Outer ear infections: These are usually treated with antibiotic ear drops. The drops are placed directly into the ear canal. It is important to keep the ear dry while treating an outer ear infection. Some doctors also recommend a wick, a small sponge placed in the ear canal, to help the drops reach deeper if the canal is very swollen.
Pain management is an important part of treatment. Over-the-counter pain relievers like acetaminophen or ibuprofen can help with ear pain. Warm compresses applied to the outside of the ear may also provide some comfort.
Can Ear Infections Go Away Without Antibiotics?
Yes. Many ear infections, especially mild middle ear infections, resolve without antibiotics. Research consistently shows that most children and adults with uncomplicated middle ear infections improve within a week without treatment.
The immune system fights off the infection, and the eustachian tubes eventually open and drain the fluid. Pain may persist for a few days, but it typically lessens as the body clears the infection.
However, some ear infections do require antibiotics. If the infection is severe, if symptoms worsen after 48 hours, or if the person is very young or has a weakened immune system, antibiotics are usually recommended. Not treating a bacterial ear infection can lead to complications like a ruptured eardrum or mastoiditis, an infection of the bone behind the ear.
What Happens If an Ear Infection Is Left Untreated?
Most ear infections resolve without complications. But some can lead to problems if left untreated.
A ruptured eardrum is the most common complication. Pressure from fluid buildup can cause the eardrum to tear. This often relieves pain, and the eardrum usually heals on its own within a few weeks. But it needs medical monitoring to ensure it heals properly.
Chronic middle ear fluid is another possible outcome. Fluid can stay in the middle ear long after the infection clears. This can cause temporary hearing loss. In children, persistent fluid can affect speech development and learning, which is why doctors monitor this carefully.
Serious complications are rare but possible. The infection can spread to the mastoid bone behind the ear, causing mastoiditis. In very rare cases, it can spread to the brain or the membranes around the brain. These conditions require immediate medical care.
How Can I Prevent Ear Infections?
Prevention focuses on reducing risk factors.
For middle ear infections, reducing exposure to colds is the most effective strategy. Frequent handwashing, avoiding close contact with sick people, and not smoking around children all help. Breastfeeding for at least the first six months of life has been shown to reduce the risk of middle ear infections in infants.
For outer ear infections, keeping the ear canals dry is key. After swimming or showering, tilt your head to let water drain out. You can also use a hair dryer on the lowest setting, held at arm’s length, to dry the ears. Avoid putting cotton swabs, fingers, or any objects into the ear canal. These can scratch the skin and introduce bacteria.
Frequently Asked Questions
Can I fly with an ear infection?
Flying with an ear infection can be painful because pressure changes in the cabin affect the middle ear. Decongestants taken before the flight may help, but you should ask your doctor if it is safe to fly with an active infection.
Are ear infections contagious?
Ear infections themselves are not contagious, but the colds and respiratory infections that often lead to them are. The bacteria and viruses that cause the underlying illness can spread to others.
Can I swim with an ear infection?
You should not swim with an outer ear infection because water can make it worse. For middle ear infections, swimming is usually safe if you do not have a ruptured eardrum, but you should check with your doctor first.
How long does an ear infection last?
Most ear infections improve within two to three days, and full recovery usually happens within one to two weeks. If symptoms last longer than a week or get worse, see a doctor.
