My son has a suspected diary allergy since he was born. He was put on and lately Aptamil Peptid.
However, he has never been tested for allergy.
I began giving him diary products when he was about 8 months. However, for the past few weeks, he has been suffering from nasal congestion and phlegm particularly at nights. I am wondering whether it is because of the introduction of diary. This did not begin immediately after trialling diary products but I notice that it has been about 4-5 weeks and he has nasal congestion and phlegm in the throat that simply won't go away. I should note that he had a cold about 5 weeks ago.
Do you think this is an allergy response or perhaps he is still recovering from the cold 5 weeks on?