What Causes a Rash on Top of the Foot?


Quick Answer

A rash on top of the foot can develop due to a variety of factors that include contact with harsh chemicals, such as laundry detergents; skin conditions, such as eczema; poison ivy; and insect stings, explains HealthGrades. Additional causes of foot rashes can include Lyme disease, psoriasis and impetigo.

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What Causes a Rash on Top of the Foot?
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Full Answer

Athlete's foot is another common condition that causes inflammation, itching and sores on top of the feet, explains WebMD. Athlete's foot develops due to fungi that is naturally present on dead skin tissues and tends to thrive in warm, humid environments, such as locker rooms and community showers. When the fungi multiplies on the skin due to warm conditions, it can spread between the toes and to the tops of the feet. Additional symptoms of athlete's foot include blisters, peeling skin and scales.

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