What is the role of climate in the etiology of atopic dermatitis (eczema)?

Updated: Aug 02, 2019
  • Author: Brian S Kim, MD, MTR, FAAD; Chief Editor: William D James, MD  more...
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Answer

AD flares occur in extremes of climate. Heat is poorly tolerated, as is extreme cold. A dry atmosphere increases xerosis. Sun exposure improves lesions, but sweating increases pruritus. These external factors act as irritants or allergens, ultimately setting up an inflammatory cascade.


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