Question
A 20-month-old child has had a laryngeal rumble since he was four months old. Although allergy tests show results within normal limits, the symptoms persist. The child has had colds and coughs and the symptoms have been somewhat relieved after taking medication, but the laryngeal rumble remains. What could be the cause of this? Is it necessary to have a detailed examination at the hospital, or will it naturally heal as the child grows older?