Scratching the skin triggers a series of immune responses culminating in an increased number of activated mast cells(link is external)—immune cells involved in allergic reactions—in the small intestine, according to research conducted in mice.
Eczema
Scientists Identify Unique Subtype of Eczema Linked to Food Allergy
Scientists have now found that children with both atopic dermatitis and food allergy have structural and molecular differences in the top layers of healthy-looking skin near the eczema lesions, whereas children with atopic dermatitis alone do not.
