Many individuals have a genetic predisposition to atopic dermatitis. Those who are affected by this disorder have a highly reactive immune system. Moreover, atopic skin shows severe dryness.
Because the skin barrier has become modified, the allergens in our environment are able to deeply penetrate into the lower epidermal layers. They then stimulate the immune system, which overreacts. This causes clinical signs of atopic eczema to appear: itchiness, inflammation and oozing. Environmental factors may also explain the significant increase in atopic dermatitis over the past few years: pollution, passive smoking, etc.
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This article was brought to you by the skin experts from La Roche-Posay.