my 2.6 yr old baby girl coughs when she wokes up from sleep. either it's afternoon or evening or night. she only coughs for 15-20 mins aftr waking up. rest all the time she is fine. what to do. please help

A. The reason is that mucus from the sinuses drains into the throat while your toddler is horizontal, triggering the cough. Asthma also can cause a nighttime cough, as airways tend to be more irritable after bedtime. Contact your pediatrician if your toddler's cough is on-and-off and gets worse at night and while active.