Hearing loss does not usually result in deafness. Hearing loss may decrease the person’s ability to clearly hear voices. Some types of hearing loss cause the person to not be able to hear certain frequencies of sound. One symptom of hearing loss is muffled hearing in one ear. The ear experiencing such hearing loss may feel clogged.

Glue ear is a condition that can cause muffled hearing in one ear. Glue ear is caused by a buildup of fluid trapped in the ear. The severity of the hearing loss is related to the thickness of the fluid. The fluid in the ear causes conductive hearing loss by blocking the transmission of sound from the outer ear to the inner ear.

The condition of glue ear can cause mild hearing loss to deafness in the affected ear. One or both ears may be affected by glue ear. A physician can often remove the fluid without the need of surgery.

The cause of muffled hearing in one ear may be as simple as a blockage of the ear canal by earwax. If the hearing loss might be caused by earwax buildup, the person should not use a cotton swab to try to remove the earwax. Putting a cotton swab inside the ear canal might push the earwax further into the ear canal and make the problem worse or even damage the eardrum. The person may use an earwax removal kit that is available in many drug stores or have the earwax removed by a physician.

A perforated eardrum can cause muffled hearing. The rupture of the eardrum can occur from injury, infection, or auditory trauma such as exposure to a loud noise. Perforated eardrums usually heal on their own, but substantial damage to the eardrum may need to be surgically repaired. An ear infection may cause the muffled hearing. If a bacterial infection is present, the doctor may prescribe an antibiotic.

A noncancerous tumor in the ear canal or near other structures of the ear can interfere with the hearing in the effected ear. This can cause muffled hearing in the ear. Repeated exposure to cold water and cold air can result in the formation of a bony growth that can compromise the hearing ability of that ear. An acoustic neuroma is a noncancerous tumor on the auditory nerve. The acoustic neuroma can cause hearing loss in the effected ear.

When someone experiences hearing loss, a physician should be consulted so that the cause of the hearing loss and proper treatment can be determined. Prompt medical care can prevent the hearing loss from being permanent.