Children are susceptible to upper and lower respiratory tract infections, especially those in frequent contact with other kids (e.g. daycare or preschool). Colds, flu, allergies, sinusitis, croup, asthma, bronchiolitis, and pneumonia all make breathing difficult, with symptoms ranging from congestion and shortness of breath to wheezing and rapid breathing.
Acid reflux, or laryngopharyngeal reflux (LPR), is another condition that is known to cause airway problems in children. Sometimes referred to as silent reflux, LPR is similar to gastroesophageal reflux (GERD) but is not usually accompanied by heartburn. It occurs when stomach acids reflux into the throat, and results in difficulty swallowing, sore throat, cough, wheezing, and postnasal drip.
Other airway problems common in children include allergies, teething, asthma, and sleep apnea.