There is often a cow's milk intolerance with eosinophilic gastroenteropathy but the RAST test may be negative.The diagnosis of eosinophilic gastroenteropathy is usually made on a biopsy sample showing masses of cells known as eosinophils in the lining of the stomach and intestines. The RAST test detects allergy to cow's milk due to a raised IgE, but not certain forms of cow's milk protein intolerance.Your son does not appear to be an allergic child and his postnasal drip does not appear to be due to an allergic cause. He may have infected sinuses at his age. His symptoms strongly suggest a post nasal drop problem. Use Sterimar nasal spray twice daily to clear his nose.
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