Enlarged glands are generally more common in infants and preschool children. They can block the posterior nasal passages, causing the child to breathe through the mouth, snore, and hold their breath. If the child is over one year old, surgical treatment can be considered. Because the anesthesia risk is higher with very young children, but as they get older, chronic mouth breathing and breath-holding can lead to abnormal facial development and brain oxygen deficiency, affecting the child's development. Theoretically, the earlier the adenoid hypertrophy is discovered and treated, the better the treatment effect. However, due to the young age of the child and the risks of anesthesia, surgery is generally best scheduled around the age of two years, after the child has turned one.