Adenoid Hypertrophy
Enlargement of the tissue behind the nose that can block the airway
Quick Facts
- Type: Ear, nose, and throat (ENT) condition
- Most common in: Children
- Main effects: Nasal blockage, mouth breathing, snoring
- Often linked to: Ear infections, sleep problems
Overview
The adenoids are a small patch of lymphatic tissue located high in the back of the nose, where the nasal passages meet the throat. Along with the tonsils, they are part of the body's immune system and help trap germs that enter through the nose and mouth. Adenoid hypertrophy means these tissues have become enlarged. This is very common in young children and usually shrinks naturally as they grow older.
Because the adenoids sit at a narrow junction of the airway, enlargement can partly block the flow of air through the nose and interfere with the tubes that drain the middle ear. This can lead to persistent nasal congestion, mouth breathing, snoring, disturbed sleep, and repeated ear infections. Many children outgrow the problem, but when symptoms are significant or long-lasting, treatment, including a procedure to remove the adenoids, can bring clear relief.
Symptoms
Symptoms result mainly from blockage of the nose and the ear-draining tubes. They are most noticeable during sleep and during or after colds.
- Persistent stuffy or blocked nose, even without a cold
- Breathing through the mouth, especially at night
- Snoring and noisy breathing during sleep
- Pauses in breathing during sleep (sleep apnea) in some children
- A nasal or muffled quality to the voice
- Frequent or long-lasting ear infections and fluid behind the eardrum
- Restless sleep, daytime tiredness, or trouble concentrating
If a child regularly stops breathing, gasps, or chokes during sleep, this can signal obstructive sleep apnea and should be evaluated by a doctor.
Causes
The adenoids enlarge as a normal response to fighting infection, and in some children they stay enlarged. Common contributors include:
- Repeated infections: Frequent colds, throat, and sinus infections cause the adenoids to swell as they respond to germs.
- Allergies: Ongoing allergic inflammation in the nose and throat can keep the adenoids enlarged.
- Natural variation: Some children simply have larger adenoids that take longer to shrink.
Adenoid tissue is largest in early childhood and normally becomes smaller during the school years and adolescence. Enlarged adenoids that cause problems in adults are uncommon and may prompt a search for another cause.
Risk Factors
- Young age, particularly preschool and early school years
- Frequent upper respiratory infections
- Nasal and respiratory allergies
- Exposure to tobacco smoke and air pollution
- Attending daycare or having older siblings, which increases exposure to infections
Diagnosis
A doctor diagnoses enlarged adenoids based on symptoms and an examination of the nose, throat, and ears.
- History and examination: Asking about congestion, snoring, mouth breathing, and ear problems, and checking the nose, throat, and eardrums.
- Nasal endoscopy: A thin flexible camera passed into the nose to view the adenoids directly.
- X-ray of the neck: Sometimes used to estimate the size of the adenoids.
- Sleep study: May be recommended if obstructive sleep apnea is suspected.
- Hearing tests: Useful when there is fluid behind the eardrum affecting hearing.
Treatment
Treatment depends on how severe the symptoms are and how much they affect breathing, sleep, and the ears. Many children improve without surgery as the adenoids shrink with age.
- Watchful waiting: Mild cases are often monitored, since the adenoids tend to get smaller over time.
- Medicines: Nasal steroid sprays and allergy treatments can reduce swelling and congestion in some children. Antibiotics are used if there is a bacterial infection.
- Adenoidectomy: A common, generally safe operation to remove the adenoids, recommended when enlargement causes significant sleep problems, sleep apnea, repeated ear infections, or persistent breathing difficulty.
- Ear tubes: Small tubes may be placed in the eardrums at the same time if recurrent ear fluid or infections are a problem.
Recovery from adenoid removal is usually quick, and breathing and ear symptoms often improve noticeably afterward.
Prevention
- Treat nasal and respiratory allergies to reduce ongoing inflammation
- Encourage good hand washing to lower the number of colds and infections
- Keep children away from tobacco smoke
- Keep up with recommended childhood vaccinations
- Manage congestion early during colds and allergy flare-ups
When to See a Doctor
See a doctor if your child has constant nasal blockage, breathes through the mouth most of the time, snores heavily, or has frequent ear infections. Seek prompt medical attention if your child:
- Repeatedly stops breathing, gasps, or chokes during sleep
- Has very restless sleep with daytime tiredness or behavior changes
- Develops ongoing hearing difficulty
If a child has severe difficulty breathing or turns blue around the lips, seek emergency care right away.
Frequently Asked Questions
What are the adenoids and what do they do?
The adenoids are a small patch of immune tissue high in the back of the nose. They help trap germs entering through the nose and mouth, especially in young children, and normally shrink as a child grows older.
Will my child outgrow enlarged adenoids?
Often, yes. Adenoid tissue is largest in early childhood and usually becomes smaller during the school years and adolescence. Many children improve without surgery, though treatment may be needed if symptoms are severe or long-lasting.
Why do enlarged adenoids cause ear infections?
The adenoids sit near the openings of the tubes that drain the middle ear. When enlarged, they can block these tubes, trapping fluid behind the eardrum and making ear infections and hearing problems more likely.
Is adenoid removal a major operation?
Adenoidectomy is a common and generally safe procedure done under general anesthesia, and recovery is usually quick. It is recommended when enlarged adenoids cause significant sleep problems, sleep apnea, or repeated ear infections.
When should I be concerned about my child's breathing during sleep?
If your child repeatedly stops breathing, gasps, chokes, or has very restless sleep with daytime tiredness, see a doctor, as this can signal obstructive sleep apnea. Severe breathing difficulty or blue lips is an emergency needing immediate care.
References
- American Academy of Otolaryngology–Head and Neck Surgery. Adenoids.
- Mayo Clinic. Enlarged adenoids.
- MedlinePlus, U.S. National Library of Medicine. Adenoids and adenoidectomy.
- Nemours KidsHealth. Adenoids.