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Cerumen Impaction – Causes, Symptoms & Treatment

Cerumen impaction occurs when earwax builds up and hardens in the ear canal, potentially causing hearing loss, pressure, or discomfort.

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Things worth knowing about "Cerumen Impaction"

Cerumen impaction occurs when earwax builds up and hardens in the ear canal, potentially causing hearing loss, pressure, or discomfort.

What is Cerumen Impaction?

Cerumen impaction (also known as an earwax plug or blocked ear canal) occurs when cerumen – the natural wax produced by the ear – accumulates and hardens inside the external ear canal. Cerumen is secreted by specialized glands in the ear canal and plays an important protective role: it keeps the canal moist, repels bacteria and foreign particles, and supports the self-cleaning mechanism of the ear. When this natural process is disrupted, a plug can form that partially or completely blocks the ear canal.

Causes

Several factors can contribute to the development of cerumen impaction:

Excessive cerumen production: Some individuals naturally produce more earwax than others.
Improper ear cleaning: Using cotton swabs often pushes earwax deeper into the canal rather than removing it.
Narrow or curved ear canal: Certain anatomical features of the ear canal can prevent cerumen from draining naturally.
Use of hearing aids or in-ear headphones: These devices can interfere with the outward migration of earwax.
Age: As people age, cerumen tends to become drier and harder, increasing the risk of impaction.

Symptoms

The symptoms of cerumen impaction may include:

Hearing loss or a muffled sensation in the affected ear
Feeling of fullness or pressure in the ear
Tinnitus (ringing or buzzing sounds in the ear)
Ear pain, especially when the plug is firmly lodged
Dizziness in rare cases
Reflex cough caused by stimulation of the vagus nerve (Arnold reflex)

Diagnosis

Cerumen impaction is typically diagnosed through a simple examination of the ear canal using an otoscope or under ear microscopy. The earwax plug appears as a yellowish-brown to dark brown mass blocking the canal. In most cases, no further diagnostic tests are needed.

Treatment

There are several effective methods for removing a cerumen plug:

Ear Irrigation

Ear irrigation is one of the most common treatments. Body-temperature water or a saline solution is gently flushed into the ear canal to dislodge the plug. Softening agents such as olive oil, almond oil, or over-the-counter ear drops may be applied beforehand to loosen the wax.

Suction

In an ear, nose, and throat (ENT) clinic, cerumen can be carefully removed using a fine suction device under microscopic guidance, making this a very precise and gentle method.

Manual Removal

A healthcare professional may use a blunt curette or other specialized instrument to directly remove the plug under direct visualization.

Cerumenolytic Ear Drops

Cerumenolytic agents are ear drops that soften earwax and help it drain naturally. They are available without a prescription at pharmacies and may be sufficient for mild cases of impaction.

Important: Self-treatment with cotton swabs or sharp objects should always be avoided, as this can compact the wax further or injure the ear canal. If you experience pain, dizziness, or significant hearing loss, consult a healthcare professional promptly.

Prevention

The ear is largely self-cleaning, so routine cleaning of the ear canal with cotton swabs is generally not recommended. Individuals prone to recurrent cerumen impaction should attend regular ENT check-ups and may use prophylactic ear drops as advised by their doctor.

References

Schwartz S.R. et al. – Clinical Practice Guideline (Update): Earwax (Cerumen Impaction). Otolaryngology-Head and Neck Surgery, 2017.
Burton M.J., Doree C. – Ear drops for the removal of ear wax. Cochrane Database of Systematic Reviews, 2009.
World Health Organization (WHO) – Primary Ear and Hearing Care Training Resource, 2006.

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