Adenoid hypertrophy can be divided into physiological and pathological hypertrophy. Physiological hypertrophy is a normal part of everyone's development. It begins at the age of three, peaks at about seven, and gradually shrinks around the age of ten. Pathological hypertrophy, on the other hand, often occurs on the basis of physiological hypertrophy, followed by inflammatory stimuli. Factors such as viral infections, colds, and allergic reactions are the main causes of pathological adenoid hypertrophy. This type of hypertrophy can lead to poor respiratory function, symptoms such as snoring during sleep, nasal congestion, and a runny nose. If the enlarged adenoids block the Eustachian tube, it can also lead to secretory otitis media.