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It is generally agreed that the tendency to atopy is inherited. For the purposes of this discussion, the term eczema and atopic dermatitis will be synonymous. Individuals with atopic dermatitis have a variety of abnormal immunologic findings, like elevated IgE antibody (immunoglobulin E) levels and defective cell-mediated immunity, which causes difficulty in fighting off certain viral, bacterial, and fungal infections. Despite a susceptibility to certain infections, eczema is not itself contagious in any way.
Like most other noninfectious diseases, atopic skin disease can be triggered by environmental factors. One of the hallmarks of atopic dermatitis is excessive skin dryness, which seems to be due a lack of certain skin proteins called filaggrins. Any factor that promotes dryness is likely to exacerbate atopic dermatitis. A very dry environment may be improved with a bedroom or house humidifier.
Common triggers of atopic dermatitis include the following:
Medically Reviewed by a Doctor on 5/12/2015
Jeffrey John Meffert, MD
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