<s>[INST] During the night times while he sleeps he is not able to breeth : My 4 year son is unable to sleep properly from past 2 months. He had mind cold and running nose initailly and the running nose is cleared, but a slight cold still persists. During the night times while he sleeps he is not able to breeth and makes a lot of whisling sound and because of sound or short of breeth he wakes up. Its been almost 2 months. We are using a saline nasal drops, that helps him for max 2 hours. I have checked with couple of doctor and they all say that it is because of weather. Because of this even i am falling short of sleep and effecting my work as well. [/INST] Hello. Your son seems to be allergic to certain things like dust or pollen which is causing the mucous membranes of the upper respiratory tract to swell up and cause obstruction. You can try removing the allergens and see whether he is better. You can also use humidifiers which help in decreasing the mucosal swelling. Nebulization with normal saline at bedtime may also help. Keeping his head slightly elevated with a soft pillow will help him breathe better. If he continues to have these symptoms beyond the winter months even during summer when it's neither cold nor has air borne allergens, he may have to undergo an ENT consultation for adenoids. Hope this helps.Regards,Dr Geeta </s>