There are many causes of adenoid hypertrophy in children, most of which are due to infections. For instance, infections like pharyngitis or sinusitis can trigger adenoid hypertrophy. If a child experiences adenoid hypertrophy, it is recommended to visit the otolaryngology department of the hospital for a checkup. After a detailed examination to determine the specific cause, treatment can be tailored based on the child's individual condition. It is important to avoid greasy, spicy, and irritating foods when dealing with adenoid hypertrophy. It's advised that children consume plenty of fresh vegetables and fruits and engage in more outdoor activities.