[Development of anti-cow's milk IgE in weaning allergy]

The cow-milk weaning sometimes comes with urticaria or others allergic signs, in relation with the anti cow-milk IgE presence, which rate was studied in 30 children at the time of the accident, after the putting back to the breast-feeding or a hydrolyzed proteins milk and after reintroduction of the cow-milk. They disappear in three cases out of four, shortly after the cow-milk suppression. They reappear in one case out of three from the reintroduction. Carried on CGDS or Ketotifen , the cow-milk tolerance was quickly obtained even in the children who conserved anti-cow milk IgE, and after the treatment stop. A spontaneous tolerance after the initial accident is possible. The characteristics of the anti-cow milk IgE response in the breast-fed new-born child are examined.