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Itchy Underarm Skin

by
author image Miguel Cavazos
Miguel Cavazos is a photographer and fitness trainer in Los Angeles who began writing in 2006. He has contributed health, fitness and nutrition articles to various online publications, previously editing stand-up comedy and writing script coverage as a celebrity assistant. Cavazos holds a Bachelor of Arts in philosophy and political science from Texas Christian University.
Itchy Underarm Skin
Changing your deodorant or antiperspirant may help you avoid itchy underarm skin. Photo Credit Stockbyte/Retrofile/Getty Images

Itchy skin is also known as "pruritus." Skin diseases and your skin's reaction to chemicals in hygienic products may cause pruritis in your underarms. Treatment for your itchy underarm skin depends on the underlying cause. See your doctor if your underarm skin itches for more than two weeks or causes so much discomfort that you cannot sleep.

Miliaria Rubra

Miliaria rubra is a form of heat rash that may cause itchy underarm skin. You may experience miliaria rubra after exposure to hot and humid environments or if you are confined to bed rest. Red bumps may occur with the itching, and you may experience little or no sweating under your arms. Heat rash occurs when sweat glands in your armpit are clogged and perspiration remains trapped under your skin. Physical activity that causes excessive sweating increases your risk for developing this form of heat rash. Calamine lotion and cool environments can help sooth itching for most cases of heat rash.

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Hidradenitis Suppurativa

Hidradenitis suppurativa is a sweat gland disease that may cause itchy underarm skin. Itchiness many accompany blackheads and tender, red bumps called abscesses. Abscesses grow, break open and leak pus. Tunnels may form under your skin between individual abscesses. Hidradenitis occurs more in African-Americans and people who suffer from acne. Treatment may include antibiotics, anti-inflammatory medicine and surgery in more severe cases. Controlling your weight and wearing lose, breathable clothing may improve hidradenitis suppurativa.

Inverse Psoriasis

Psoriasis is a skin disease that causes your skin cells to build up rapidly on the surface of your skin. You may develop firm, thick scales and itchy, dry or red patches that can become painful. Inverse psoriasis is a form of psoriasis that can develop in the armpit. Smooth patches of red and swollen skin characterize inverse psoriasis. Excess weight and obesity increase your risk of experiencing this form of psoriasis due to friction and sweating in the folds of your skin.

Antiperspirant and Deodorant

Your skin may react with ingredients in antiperspirant and deodorant and cause itchy underarm skin. These items may also clog your sweat glands and lead to conditions like heat rash and hidradenitis suppurativa. Spray-on antiperspirants and deodorants may be more likely to clog your glands. Roll-on products and products with natural ingredients made for sensitive skin may help you avoid itchy underarm skin. More severe infections may require antibiotics or anti-inflammatory medication.

Dermatitis

Dermatitis causes inflammation of your skin and may cause itchy underarms. Dermatitis may occur with redness and skin lesions. Laundry soap, skin soap and detergents can irritate dermatitis. Rubber, perfume, weeds and ingredients in antibiotic creams may cause allergic reactions when they contact your underarm skin. Dry skin may also contribute to dermatitis that causes itchy underarm skin.

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References

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