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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.
Perioral Dermatitis Causes. Causes of perioral dermatitis to date are not known. Meanwhile, it is proved that the main factor contributing to the occurrence of this disease is increased skin sensitization to certain medicines (especially hormonal corticosteroid ointments), to detergents and cosmetics.erioral Dermatitis Symptoms. Perioral dermatitis begins with a barely perceptible redness of the skin of the face, that increases after eating hot or spicy food. Over time, the redness becomes persistent and is accompanied by the appearance of small nodules and pustules on the face resembling acne.