Information on Ear Infections

The ear works by receiving sound waves and sending messages to the brain. The outer ear includes the part of the ear you can see and the ear canal. The sound waves go through the ear canal and hit the eardrum and cause it to vibrate.

Ear infections are common in young children resulting in millions of office visits and antibiotic prescriptions annually. Acute otitis media (AOM) includes intense signs and symptoms of infection and inflammation and is the most common bacterial illness in children for which antibacterial agents are prescribed in the United States. Otitis media with effusion (OME) is even more common.

An ear infection means that the middle ear is infected. The middle ear is the eardrum and the small space behind the eardrum. An ear infection is sometimes called ‘acute otitis media’. A separate leaflet deals with infection of the ear canal (otitis externa).
Earaches are a common occurrence in our lives, especially with our children. Learn what causes them and how you can avoid them in the future.
Earaches can be anything from slightly painful to extremely painful and are usually brought on by a fluid buildup (sometimes resulting from an infection), or a buildup of pressure in the middle ear. A highly common cause of the earache is due to plugged ‘Eustachian’ tubes (the tube that comes from the back of your throat and connects to your middle ear). If and when your Eustachian tube becomes blocked, fluid will gather resulting in a painful earache, bringing with it the possibility of bacteria buildup or infection.

Ear pain can occur due to allergy, filling of wax in the ear, chillness, entry of any foreign body in the ear or infection in the Eustachian tube which connects ear, nose and throat.

Ear infections are the most common illnesses in babies and young children. Most often, the infection affects the middle ear and is called otitis media. The tubes inside the ears become clogged with fluid and mucus. This can affect hearing, because sound cannot get through all that fluid.

If a person has severe or persistent pain and fever, and the eardrum is bulging, a doctor may perform a myringotomy, in which an opening is made through the eardrum to allow fluid to drain from the middle ear.

The most common cause for temporary hearing loss is the fluid in the middle ear space associated with ear infections. On average, fluid lingers for 3 weeks following an ear infection, but it can remain for months.

The ear is responsible for hearing and balance and is made up of three parts - the outer ear, middle ear, and inner ear. Hearing begins when sound waves that travel through the air reach the outer ear, or pinna, which is the part of the ear you can see. The sound waves then travel from the pinna through the ear canal to the middle ear, which includes the eardrum (a thin layer of tissue) and three tiny bones called ossicles. When the eardrum vibrates, the ossicles amplify these vibrations and carry them to the inner ear.

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Middle Ear Infection Symptoms

Inflammation of the middle ear is an infection caused by a germ (bacterium). It is very common among children. The middle ear is an air-filled hollow between the eardrum and the inner ear. The Eustachian tube - an air channel between the middle ear and the nose - usually ensures that the middle ear is ventilated and that fluids can run out through the nose.

Middle ear infection most commonly occurs following a cold. It also frequently occurs as a result of contact with other children. Middle ear infection (called otitis media) is an infection behind the eardrum. Ear infections are very common and are usually painful. By the age of six, most children have grown out of middle ear infections and are not likely to suffer long-term problems.

Symptoms

In otitis media, inflammation occurs on that portion of the ear, which is directly behind the eardrum. This pain in the ear is usually of a piercing type and is not attended with fever. Pus is discharged into the outer ear. As the condition progresses, the inner ear becomes seriously affected, and hearing is considerably impaired.

Acute middle ear infection is most common in children. It is caused by a bacterial or viral infection of the fluid of the middle ear. When infection occurs in the middle ear, pus or excess fluid is produced. Ear infections are often associated with respiratory infections or with blocked sinuses caused by allergies or enlarged adenoids.

Causes

A cold or other infection of the upper airways causes the tubes which drain the ears in to the back of the throat to become swollen and filled with mucus or catarrh. These tubes are called eustachian tubes, and are the tubes we open, by yawning or swallowing, to stop our ears popping as we go up a hill or in a plane. This swelling may block the eustachian tubes, and stop the normal drainage of fluid from the middle ear down to the back of the throat. As water which is stagnant becomes foul, so there is more chance of germs building up in this stagnant situation in the middle ear, and a middle ear infection (acute otitis media) is the result.

Ear infections also can be associated with dysfunction or swelling within the eustachian tubes — the narrow passageways that connect the middle ear to the nose. Normally these tubes equalize pressure inside and outside the ear. But a child’s eustachian tubes are narrower and shorter than those of an adult. This makes it easier for fluid to get trapped in the middle ear when the eustachian tubes dysfunction or become blocked during a cold.

Treatment

Many physicians recommend the use of an antibiotic (a drug that kills bacteria) when there is an active middle ear infection. If a patient is experiencing pain, the physician may also recommend a pain reliever. Following the physician’s ear infection treatment instructions is very important. Once started, the antibiotic should be taken until it is finished. Most physicians will have the patient return for a follow-up examination to see if the infection has cleared.

Most ear infections clear on their own in just a few days — and antibiotics won’t help an infection caused by a virus. In fact, about 80 percent of children with acute otitis media recover without antibiotics, according to the AAP and AAFP. If your child is uncomfortable, the doctor may recommend an over-the-counter pain reliever such as acetaminophen (Tylenol, others) or ibuprofen (Advil, Motrin, others). If your child doesn’t have drainage from the ear or ear tubes, prescription eardrops containing a local anesthetic may be an option, too. The drops won’t cure the infection, but they may relieve pain.

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What Is Middle Ear Infection?

Middle ear infection is an infection that occurs behind the eardrum, in the middle part of the ear. While it can happen in people of all ages, it mainly affects children. The medical term for middle ear infection is otitis media. Middle ear infection is the most common childhood illness treated by pediatricians. It usually develops a few days after a child has a cold or the flu. Half of all children will have at least one middle ear infection while they’re growing up, most often before age 3.

Ear infections are among the most common illnesses of early childhood. Three out of four children have had at least one ear infection by age 3, according to the National Institute on Deafness and Other Communication Disorders. The medical term for middle ear infections is otitis media. Otitis refers to inflammation of the ear, and media means middle. Although ear infections worry parents and make children uncomfortable, take heart. Most ear infections clear up on their own within a few days, and most children stop having ear infections once they reach school age.

The ear is responsible for hearing and balance and is made up of three parts — the outer ear, middle ear, and inner ear. Hearing begins when sound waves that travel through the air reach the outer ear, or pinna, which is the part of the ear that’s visible. The sound waves then travel from the pinna through the ear canal to the middle ear, which includes the eardrum (a thin layer of tissue) and three tiny bones called ossicles. When the eardrum vibrates, the ossicles amplify these vibrations and carry them to the inner ear.

The severity of the symptoms and the age of the patient determines the likelihood of success of antibiotic treatment. Acute otitis media in children below the age of 2 have a poorer prognosis and are associated with an increased number of recurrences of acute otitis media as well as the development of otitis media with effusion in 35% after 6 months. Acute otitis media in older age groups usually resolves on its own without antibiotic treatment.

Bacteria reach the middle ear through the lining or the passageway of the eustachian tube and can then produce infection, which causes swelling of the lining of the middle ear, blocking of the eustachian tube, and migration of white cells from the bloodstream to help fight the infection. In this process the white cells accumulate, often killing bacteria and dying themselves, leading to the formation of pus, a thick yellowish-white fluid in the middle ear. As the fluid increases, the child may have trouble hearing because the eardrum and middle ear bones are unable to move as freely as they should. As the infection worsens, many children also experience severe ear pain.

The main symptom is an earache. It can be mild, or it can hurt a lot. Babies and young children may be fussy. They may pull at their ears and cry. They may have trouble sleeping. They may also have a fever.When fluid builds up but does not get infected, children often say that their ears just feel plugged. They may have trouble hearing, but their hearing usually returns to normal after the fluid is gone. It may take weeks for the fluid to drain away.

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