It would certainly be a good idea to stop giving your son milk for a trial period of at least 4 weeks. He is rather 'old' to still show such a definite positive test for milk allergy. Milk allergy can affect children's chests at this age especially if the doictor suspects that he may have asthma. Give soya milk and soya products such as soya yoghurt in place of milk and dairy products. He must not have any cow's milk during the trial period. If his chest is much better off milk he must stay on a milk free diet.
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