Skin prick test: the only predictive tool of anaphylaxis? A case report.

Currently, in the literature there is a lack of definite predictive values parameters to identify patients with the risk to develop anaphylaxis. The controlled oral food challenge remains the gold standard for food allergy diagnosis. We report a case of a girl allergic to cow's milk with low levels of specific IgE and large skin prick test wheal sizes for cow's milk. In some cases the high diameter of skin prick test wheal may be more reliable than specific IgE levels in predicting an anaphylactic reaction.