摘要: ALLERGIC SKIN diseases are relatively common and, at times, devastating clinical problems that have great socioeconomic impact. In this section, focus is given to providing a basis for understanding the role of immune mechanisms in cause certain skin and application information their diagnosis treatment. ATOPIC DERMATITIS Definition Atopic dermatitis characterized by severe pruritus, frequent onset infancy, strong familial propensity, tendency chronicity. It referred as atopic because its occurrence individuals who manifest IgE-mediated test reactions frequently later acquire allergic rhinitis, asthma, or both. Typically, begins early rarely before age 2 months, but majority instances 6 months. The expression disease life, when it occurs an erythematous, papulovesicular, exudative, intensely pruritic inflammation,