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Dermatitis: Contacts
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Besides nickel, there are a variety of agents which can cause a contact dermatitis reaction. Soaps and detergents are sources for the irritant form of contact dermatitis while materials such as rubber, perfumes, and formaldehyde tend to induce the allergic variety. It is important to note that a contact dermatitis rash can occur in an area different from where skin is exposed. For example, in some instances, it is possible to be allergic to the rubber compounds found in tennis shoe soles and manifest a hand dermatitis, Dr. Harvey and Dr. Hardy can help you sort out the often confusing details of a contact dermatitis rash.
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As the term implies, contact dermatitis is a disease resulting from skin coming into contact with an outside agent. These agents can be chemical, biological or physical in nature. There are two types of contact dermatitis associated with skin exposure to chemicals: Irritant contact dermatitis (ICD) and allergic contact dermatitis (ACD).
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Anyone who experiences symptoms of allergic contact dermatitis should consult a podiatrist. The podiatrist will take a skin sample that is examined under a microscope for the presence of dermatophytes and other fungi that live on dead tissues of the hair, toenails, and skin. Red, itchy skin on the feet, especially in athletes and those who exercise regularly, may indicate athlete's foot or other fungal infections.
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Contact dermatitis can occur on any part of the body, but it usually affects the hands, feet, and groin. Contact dermatitis usually does not spread from one person to another, nor does it spread beyond the area exposed to the irritant unless affected skin comes into contact with another part of the body. However, in the case of some irritants, such as poison ivy, contact dermatitis can be passed to another person or to another part of the body.
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Contact dermatitis usually starts in and often remains localised to the region most in contact with the offending substance. The pattern of affected skin is a vital clue in the origin of the substance (eg, a rash shaped exactly like your metal belt buckle could indicate an allergy to nickel).
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The symptoms of contact dermatitis can range from a mild, itchy rash to severe itching, swelling, and blistering. In severe cases, open sores can result in bacterial skin infections. The inflammation is confined to the area that had contact with the irritant, commonly the hands or face, but can occur on any part of the body.
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