The high prevalence of adenoid hypertrophy between the ages of 2 and 6 may be related to the prominence of lymphoid tissue in the upper airway and frequent respiratory infections at this age. The most common symptoms are snoring and difficulty breathing during sleep, and many children are seen for “snoring”. Parents may notice restless sleep, open-mouth breathing during sleep, respiratory arrest, and heaving of the chest wall; in severe cases, the child suffers from breath-holding and dyspnea during nighttime sleep. Rare symptoms include excessive sweating, loss of urine and even foaming at the mouth.