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Irritant contact dermatitis. Irritant contact dermatitis occurs when your skin comes into direct contact with a substance that damages the outer layer of your skin, causing redness, itching, and a burning or stinging sensation.
The cause of atopic dermatitis isn't known. But most people who have it have a personal or family history of allergies, such as hay fever (allergic rhinitis). The skin inflammation that causes the atopic dermatitis rash is considered a type of allergic response.he cause of atopic dermatitis isn't known. But most people who have it have a personal or family history of allergies, such as hay fever (allergic rhinitis). The skin inflammation that causes the atopic dermatitis rash is considered a type of allergic response.