Eczema has been used as a name for dermatoses which are doubtless heterogeneous. As to the etiology of many there is no conception, but as to the cause of others there now is definite, confirmed knowledge.
In a study of specific sensitivity in eczema published in 1930 we1 found that in the majority of our cases of infantile eczema the cause was food allergy and that among the older patients there were a number who gave a history of eczema in infancy and who still had eczema due in part to sensitization to food. There was so much similarity in the histories and the appearance of the lesions in these patients who had a sensitivity to food that they seemed to form a distinct group apart from many other patients with dermatoses which are also called eczema.
The fact that eczema in infants and older children may be caused
HOPKINS JG, KESTEN BM. ALLERGIC ECZEMA: ECZEMA INITIATED BY SENSITIZATION TO FOODS. Am J Dis Child. 1935;49(6):1511–1530. doi:10.1001/archpedi.1935.01970060115010
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