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What Causes Itchy Ears?

by
author image Dr. Tina M. St. John
Tina M. St. John runs a health communications and consulting firm. She is also an author and editor, and was formerly a senior medical officer with the U.S. Centers for Disease Control and Prevention. St. John holds an M.D. from Emory University School of Medicine.
What Causes Itchy Ears?
Doctor examining a woman's ear. Photo Credit XiXinXing/XiXinXing/Getty Images

Overview

Many of the same skin diseases that occur in other areas of the body can also affect the ears. Infection, dermatitis and psoriasis can cause problems with the skin of the outer ear and ear canal, provoking itching. Ear canal itching can be particularly maddening and potentially dangerous, as the desire to relieve the itching may lead to accidental injury of the eardrum.

Eczema

Eczema is a general term referring to irritation of the skin associated with intense itchiness. Chemical irritants, such as hair products or soaps, can cause eczema of the ears. In other cases, the ear rash is caused by an allergic reaction. In some people -- especially children -- an eczematoid rash is part of a long-term skin condition called atopic dermatitis. Avoidance of any triggering substances is helpful in many cases. Topical medication may be needed to treat atopic dermatitis of the ears.

Seborrheic Dermatitis

Seborrheic dermatitis is a chronic inflammatory skin condition characterized by an itchy, waxy, scaling rash. The ears are commonly affected in adults with the disorder. Seborrheic dermatitis is caused by an inflammatory immune response to Malassezia yeast, which normally inhabits the skin. The yeast produces substances that trigger a skin reaction in people with seborrheic dermatitis. Antifungal medications and topical steroids typically prove useful in controlling seborrheic dermatitis.

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Psoriasis

Psoriasis is a lifelong skin condition characterized by patchy, dry areas of skin overgrowth capped by silvery-white scales. Itching and pain commonly occur in involved areas. Psoriasis can affect any skin surface, including the outer ear and ear canal. Psoriasis scale buildup in the ear canal can cause blockage. Removal of the blockage and topical medications are typically used to control psoriasis scales involving the ear.

Swimmer's Ear

Swimmer’s ear, also known as otitis externa, occurs when the skin of the ear canal becomes inflamed or infected. An abnormal amount of moisture in the ear increases the likelihood of developing this condition. The most common symptoms of otitis externa are itching and pain of the ear canal. Swelling may cause temporary hearing loss due to partial blockage of the canal. The affected ear often requires cleaning by an ear doctor to remove drainage and skin debris. Eardrops clear the infection and reduce skin irritation.

Earwax Problems

Earwax, or cerumen, protects the skin of the ear canal. It keeps the canal clean and resists bacterial infection. Cerumen normally moves outward to the opening of the ear canal, where it flakes off the skin surface. Overzealous efforts to keep the ears clean by removing cerumen with cotton-tipped swabs can lead to dryness and itching of the ear canal. Ear itching associated with inadequate cerumen typically clears with discontinuation of the use of cotton swabs to clean the ear canal. Cerumen impaction -- an overabundance of earwax that blocks the ear canal -- can also cause ear itching.

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References

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