Ear Infections: Symptoms, Causes, Treatment & Care

Ear infections can affect babies, older children, and adults. They often begin after a cold, flu, allergy flare, or other breathing illness.

Several ear problems can cause pain, pressure, drainage, or hearing changes. Yet their causes and treatments may differ.

This guide explains common types, warning signs, diagnosis, treatment, and home care. It also covers when you or your child should get medical help.

The ear has outer, middle, and inner sections. Infection location affects the symptoms, examination findings, and treatment.

Acute otitis media is an infection in the air-filled middle ear. This space sits directly behind the eardrum ⁷.

A middle ear infection often begins after a cold, flu, or allergy problem. Swelling can block normal fluid drainage and allow germs to grow.

Symptoms often begin quickly and may include pain, fever, or reduced hearing ^5,7. Middle ear infections are more common in children than adults.

Otitis media with effusion means fluid sits behind the eardrum without an active infection ^1,2. The shorter name is middle ear fluid.

This fluid may remain after an infection has cleared ^2,5. It may also develop when a eustachian tube becomes partly blocked ².

Middle ear fluid often clears on its own ². If symptoms occur, they may include fullness or muffled hearing ².

High fever, severe ear pain, and pus draining from the ear are not symptoms to ignore. These are not features of uninfected middle ear fluid (otitis media with effusion), and you or your child should be seen promptly by a healthcare professional. Uninfected middle ear fluid (otitis media with effusion) often clears without treatment over several weeks or months ².

Swimmer’s ear is an infection of the outer ear canal. It is different from a middle ear infection.

The infection site, examination, and treatment differ from those of acute otitis media. A clinician can identify which area of the ear is affected.

For more details, read our guide to swimmer’s ear symptoms and treatment.

Middle ear infection symptoms can develop soon after an upper breathing infection ⁷. Symptoms may look different in babies, older children, and adults.

Babies cannot explain where they feel pain. Changes in sleep, mood, feeding, or responses to sound may offer helpful clues.

Possible signs in babies and young children include:

Ear tugging alone does not confirm an infection ⁴. Infants may pull their ears even when no infection is present.

Older children can often describe their symptoms more clearly. Adults can also develop infections behind the eardrum ⁸.

Possible middle ear infection symptoms include:

Ear pain can occur with throat symptoms and other illnesses. Our guide explains possible causes of sore throat and ear pain.

A middle ear infection places fluid behind the eardrum ⁴. Pressure may cause the eardrum to tear and release fluid.

Sudden yellow or green drainage may signal a torn eardrum ⁴. Yellow, brown, or white drainage can also occur with a tear ⁷.

If clear fluid, pus, or blood leaves the ear, arrange a medical assessment. Drainage can reflect a tear or another ear problem that needs diagnosis.

Fluid without infection may cause muffled hearing or ear fullness ². Younger children may raise the television volume because they cannot hear well ².

Viruses and bacteria can cause middle ear infections ^3,4. The germs that cause colds and flu can also lead to these infections ^3,7.

A eustachian tube connects each middle ear with the back of the throat ^2,5. It helps move fluid away from the middle ear ².

A cold, flu, allergy, or sinus problem can cause swelling near this tube ^4,5. The swollen tube may become blocked, which traps fluid behind the eardrum.

Viruses or bacteria can then grow in the trapped fluid ⁷. The resulting swelling and pressure can cause pain and hearing changes ^7,8.

Two common bacterial causes include:

Ear infections themselves do not spread between people ⁷. However, the viruses and bacteria linked to them can spread ⁷.

Ear infections are most common from ages 6 months through 2 years ^5,7. Young children have smaller and more horizontal eustachian tubes.

This shape makes fluid drainage harder. Their developing immune systems may also have more trouble fighting infections ^7,9.

Adenoids are tissues near the openings of the eustachian tubes. Swollen adenoids can block these tubes, especially in children.

Several factors may raise a child’s chance of an ear infection. Risk does not mean an infection will always develop.

Possible risk factors include:

Fall and winter bring more middle ear infections. Seasonal allergy periods can also raise risk for some people.

Ear infection treatment depends on age, symptoms, examination findings, and overall health. A correct diagnosis helps separate infection from fluid without infection.

The clinician will ask about pain, fever, drainage, hearing, and recent illnesses. The clinician then looks inside the ear with a lighted tool called an otoscope ^4,6.

Possible examination findings include:

Tympanometry measures how the eardrum moves and can help detect middle ear fluid ^2,8. A hearing test may be needed after repeated infections or lasting fluid ^2,4.

Many mild middle ear infections improve without antibiotics. A doctor may ask about ear pain and examine the ear when diagnosing a middle-ear infection ⁸.

Helpful care may include:

Ear pain drops may offer brief relief when the eardrum has no tear. Ask a clinician before using drops if drainage or a tear is possible.

Selected children with mild infections may be observed for 48 to 72 hours ^6,7. This approach gives the immune system time to respond before antibiotics begin.

Observation may suit children ages 6 through 23 months with mild pain in one ear. The pain must have lasted under 48 hours, with fever below 102.2°F.

Children aged 24 months or older may qualify with mild pain in either ear. Their pain must also be brief, with fever below 102.2°F.

A clinician may provide a delayed prescription during this period. The family fills it only if symptoms fail to improve as directed.

Antibiotics treat bacterial infections, but they do not help viral infections ⁴. Unneeded antibiotic use can make bacteria harder to treat later.

Antibiotics are more likely to be used in these situations:

If antibiotics are prescribed, give every dose as directed ^4,6. Contact the clinician if the medicine seems ineffective after 48 to 72 hours ⁴.

Persistent fluid and repeated infections can affect hearing. Hearing loss in young children may delay speech or other development ^5,7.

Follow-up may include hearing and language checks. An ear, nose, and throat specialist is often called an ENT specialist.

Ear tubes may help with repeated infections or long-lasting middle ear fluid. These tiny tubes let air enter and help fluid drain ^4,6.

Fluid lasting four to six months may lead to a tube recommendation ². The decision can also depend on hearing loss, recurrence, and developmental concerns ^2,6.

Many infections improve within a few days, but some need medical care ^3,7. Age, fever, drainage, hearing, and symptom length help guide that decision.

Arrange medical care in the following situations:

A baby younger than 3 months needs immediate evaluation for fever. This applies when the temperature reaches 100.4°F or higher.

Contact a clinician promptly if a child has severe pain or pus-like drainage. Do not wait through an observation period when symptoms are severe.

Most ear infections do not cause long-term problems ^5,7. Complications become more likely with repeated, lasting, or poorly controlled infections.

Possible complications include:

Most eardrum tears heal without surgery. Some tears need surgical repair.

No single step prevents every ear infection. However, several habits may lower exposure or known risk factors.

Practical steps include:

Ear infections in adults and children can cause pain, fever, drainage, or hearing changes. Middle ear fluid can also occur without an active infection ^1,2.

Ear infections may clear with usual medical treatment ^1,4. Selected children can wait 48 to 72 hours before starting antibiotics ^6,7.

Treatment should reflect the person’s age, symptoms, examination, and health. Young infants and people with severe or lasting symptoms need earlier assessment.

Seek care for drainage, hearing loss, worsening illness, or fever of 102.2°F or higher. A baby under 3 months needs immediate evaluation for fever of 100.4°F or higher.