<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a 21 month old who is constantly teething and congested. Ped says hes normal. Tonight I heard a slight wheeze when he woke up. Hes been waking overnight at least 4-5 times crying. I have a humidifier in his room on now. Does this seem to be allergy symptoms or pneumoniabronchiolitis?  <response>: Hi, If you got him checked by the PED recently, and if he did not mention pneumoniabronchiolitis, then, this is excluded. However, I highly suggest getting him physically examined by the PED for further evaluation. Usually, when having common coldviral infection, the upper airways are congested and become narrowing. This is associated with difficulty in breathing. I advise to: - do aerosol-therapy with saline-keep his noseairways clearedopened-give him plenty of waterfluids to avoid deny Chat Doctor. 