Could nasal congestion in children be cured?

Cure ?????: Since the nasal passages are lined with sensitive tissue, it can and will swell in response to respiratory irritants and a variety of infectious agents. Congestion is most noticeable when infants have a small head/nose/nasal passages and are not yet mouth breathing. This improves with head growth, but any child will have recurrent nasal congestion when conditions set it off.

Depends on cause: It depends on the cause for the congestion but can usually be controlled. If it is from an allergic problem, some children may grow out of it.