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Allergic contact dermatitis (ACD - inflammation of the skin) is a condition, develops when the
skin comes in contact with a substance (allergen) that produces an allergic reaction. When the
skin is sensitive or when exposed to allergens, exposure will produce a rash or itchy
skin condition. Some people are born or develop hypersensitivity to certain type of allergens, usually organic substances or chemicals. The rash becomes noticeable within hours or days, from the time of the exposure or contact. Dermatitis usually shows redness, swelling, and water blisters, from tiny to large. The blisters may break, forming crusts and scales. Furthermore, the
skin may darken and become leathery and cracked if untreated, and can be more difficult to distinguish from other rashes. Certain allergic contacts to the
skin is unrelated to any allergen, such as urticara (red patches and weals surround the red central area of any
skin reaction), in which rash appears within minutes of exposure and fades away within minutes to hours, common to an allergic reaction such as latex. Also, irritant contact dermatitis or hand dermatitis
skin condition is caused by excessive exposure to an irritant, includes water, soap, detergent, solvents, friction, acid and alkalis. A patch test diagnoses the substance or allergens, best done with help of a dermatologist (or allergist) or can be done by your self. During the test small amounts of suspected allergens is applied to the
skin for period of time (usually two days), and observing for any allergic reaction.