question: 2 1/2 year old son, 12 kg, 89cm. Allergic to dairy. Hello dr, hope you are well. I am worried about my son. He has had a blocked nose at night ever since I can remember. He snores loudly and breathes through his mouth. He wakes often crying, I suspect because his throat is dry, and wants something to drink. Lately he has also taken to covering his mouth with his hand when getting sleepy and also while sleeping at times. Could this be another allergy, or something else. He doesn t get colds or flu that often, but the nose stays blocked at night (not during the day). He was born 6 weeks prematurely.I would really appreciate your answer.Kind regards.