Medical Conditions

Does My Baby Have Enlarged Adenoids?

Medically reviewed by Dr. Michael Okonkwo, MD, FAAP · Board-Certified Neonatologist

Content reviewed against published AAP, Mayo Clinic, NIH guidelines

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If your baby has been diagnosed with or you suspect does my baby have enlarged adenoids, here is what the evidence says.

The short answer

Adenoids are immune tissue located behind the nose that can become enlarged, especially from frequent infections. Signs include persistent mouth breathing, loud snoring, nasal voice quality, chronic nasal congestion, and restless sleep. Enlarged adenoids can contribute to recurrent ear infections and sleep apnea. Adenoids typically grow during early childhood and begin to shrink by age 5-7. If they cause significant problems, surgical removal (adenoidectomy) may be recommended.

Key takeaways

  • Adenoids are immune tissue located behind the nose that can become enlarged, especially from frequent infections. Signs include persistent mouth breathing, loud snoring, nasal voice quality, chronic nasal congestion, and restless sleep. Enlarged adenoids can contribute to recurrent ear infections and sleep apnea. Adenoids typically grow during early childhood and begin to shrink by age 5-7. If they cause significant problems, surgical removal (adenoidectomy) may be recommended.
  • Usually normal when: Your baby snores mildly during a cold but breathes normally when well
  • Call your doctor if: Your baby has pauses in breathing during sleep (observed apnea), gasping or choking during sleep, or seems to struggle to breathe through their nose constantly
  • Varies by age — see the age-by-age breakdown below
“Fever itself is not an illness — rather, it is a sign or symptom that the body is fighting an infection. Fever stimulates certain defenses, such as the white blood cells, which attack and destroy invading bacteria.”
— Fever and Your Child, American Academy of Pediatrics (AAP)

This is one of the most common questions parents ask. Searching for answers means you care.

What Parents Should Know

According to AAP, Mayo Clinic, NIH guidelines, adenoids are immune tissue located behind the nose that can become enlarged, especially from frequent infections. Signs include persistent mouth breathing, loud snoring, nasal voice quality, chronic nasal congestion, and restless sleep. Enlarged adenoids can contribute to recurrent ear infections and sleep apnea. Adenoids typically grow during early childhood and begin to shrink by age 5-7. If they cause significant problems, surgical removal (adenoidectomy) may be recommended. At 0-3 months, adenoid enlargement is uncommon in very young babies. If your newborn has persistent nasal obstruction, other causes (such as choanal atresia or other structural issues) should be evaluated. Normal newborn nasal congestion is common and does not usually indicate adenoid problems. It is generally considered normal when your baby snores mildly during a cold but breathes normally when well. However, you should contact your pediatrician promptly if your baby has pauses in breathing during sleep (observed apnea), gasping or choking during sleep, or seems to struggle to breathe through their nose constantly.

Sources: [1], [2], [3]

Normal vs. Concerning

Usually Normal
Worth Discussing
Your baby snores mildly during a cold but breathes normally when well
Your baby has pauses in breathing during sleep (observed apnea), gasping or choking during sleep, or seems to struggle to breathe through their nose constantly
Occasional mouth breathing when congested that resolves when the illness clears
Your baby has such severe nasal obstruction that feeding is significantly impaired or they are failing to gain weight
Your baby's adenoids are mildly enlarged on examination but not causing symptoms
Your baby is a habitual mouth breather, even when not sick

By Age

What to expect by age

0-3 months

Adenoid enlargement is uncommon in very young babies. If your newborn has persistent nasal obstruction, other causes (such as choanal atresia or other structural issues) should be evaluated. Normal newborn nasal congestion is common and does not usually indicate adenoid problems.

3-6 months

Adenoids begin to grow as the immune system develops. Significant enlargement at this age is unusual. If your baby has persistent nasal breathing difficulty, chronic mouth breathing, or significant snoring, discuss with your pediatrician. These symptoms at this age are more commonly from other causes.

6-12 months

Adenoid growth increases as babies are exposed to more infections. If your baby snores frequently, breathes through the mouth habitually, or has chronic nasal congestion that does not improve with cold treatments, enlarged adenoids may be contributing. Your pediatrician may refer to an ENT for evaluation.

12-24 months

This is a common age for adenoid-related issues to become apparent. Signs include chronic mouth breathing, loud snoring, pauses in breathing during sleep (sleep apnea), recurrent ear infections, and nasal voice quality. Enlarged adenoids can block the eustachian tubes, contributing to ear fluid and infections.

2-3 years

Adenoids are typically at their largest between ages 2-6. If your child has significant sleep disruption from snoring and mouth breathing, recurrent ear infections, or has had ear tubes that are not resolving ear problems, an adenoidectomy may be recommended. The surgery is very common and recovery takes about 1-2 weeks.

What to Tell Your Pediatrician

  • Describe when you first noticed does my baby have enlarged adenoids and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if your baby is a habitual mouth breather, even when not sick.
  • Mention if your baby snores loudly most nights.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

What Should You Do?

When to take action

Probably normal when...
  • Your baby snores mildly during a cold but breathes normally when well
  • Occasional mouth breathing when congested that resolves when the illness clears
  • Your baby's adenoids are mildly enlarged on examination but not causing symptoms
Mention at your next visit when...
  • Your baby is a habitual mouth breather, even when not sick
  • Your baby snores loudly most nights
  • Your baby has recurrent ear infections along with chronic congestion
Act now when...
  • Your baby has pauses in breathing during sleep (observed apnea), gasping or choking during sleep, or seems to struggle to breathe through their nose constantly
  • Your baby has such severe nasal obstruction that feeding is significantly impaired or they are failing to gain weight

What You Can Do at Home

  • Keep track of when you notice does my baby have enlarged adenoids — noting the time of day, duration, and any triggers can help your pediatrician.
  • Remember that your baby snores mildly during a cold but breathes normally when well — this is generally within the range of normal.
  • At 0-3 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
  • Follow any care instructions from your pediatrician. Keep a written log of symptoms to bring to appointments.
  • While monitoring at home, seek immediate care if your baby has pauses in breathing during sleep (observed apnea), gasping or choking during sleep, or seems to struggle to breathe through their nose constantly.

Could My Baby Have Tonsillitis?

Tonsillitis (inflammation of the tonsils) is usually caused by viral infections in babies and toddlers. It causes sore throat, difficulty swallowing, fever, and visibly red or swollen tonsils sometimes with white patches. Viral tonsillitis resolves on its own in 5-7 days. Bacterial tonsillitis (strep) is uncommon before age 2-3 but needs antibiotic treatment. See your pediatrician if your baby has a severe sore throat with high fever.

My Baby Breathes Through Their Mouth

Young babies are preferential nose breathers and typically only breathe through their mouths when crying. If your baby is consistently mouth breathing, it is usually due to nasal congestion from a cold or allergies. However, chronic mouth breathing in an infant or toddler, especially during sleep, can sometimes indicate enlarged adenoids, nasal obstruction, or other issues that warrant evaluation.

Baby Sleep Apnea Signs

Brief pauses in breathing (up to about 10 seconds) can be normal in young infants, especially premature babies, as their brainstem matures. However, pauses longer than 20 seconds, breathing accompanied by color changes or gasping, or habitual loud snoring with observed pauses should be evaluated by your pediatrician promptly.

When Should My Baby See a Pediatric ENT?

A pediatric ENT (otolaryngologist) specializes in ear, nose, and throat conditions in children. Common reasons for referral include recurrent ear infections (3+ in 6 months or 4+ in a year), hearing loss, chronic ear fluid, enlarged tonsils or adenoids causing sleep or breathing problems, stridor, chronic sinusitis, airway abnormalities, and neck masses. These specialists can perform ear tube surgery, tonsillectomy, adenoidectomy, and airway evaluations.

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Frequently asked questions

Is does my baby have enlarged adenoids normal?
Adenoids are immune tissue located behind the nose that can become enlarged, especially from frequent infections. Signs include persistent mouth breathing, loud snoring, nasal voice quality, chronic nasal congestion, and restless sleep. Enlarged adenoids can contribute to recurrent ear infections and sleep apnea. Adenoids typically grow during early childhood and begin to shrink by age 5-7. If they cause significant problems, surgical removal (adenoidectomy) may be recommended.
When should I call the doctor about does my baby have enlarged adenoids?
Your baby has pauses in breathing during sleep (observed apnea), gasping or choking during sleep, or seems to struggle to breathe through their nose constantly Your baby has such severe nasal obstruction that feeding is significantly impaired or they are failing to gain weight
When is does my baby have enlarged adenoids normal?
Your baby snores mildly during a cold but breathes normally when well Occasional mouth breathing when congested that resolves when the illness clears Your baby's adenoids are mildly enlarged on examination but not causing symptoms
What causes does my baby have enlarged adenoids?
Adenoids are immune tissue located behind the nose that can become enlarged, especially from frequent infections. Signs include persistent mouth breathing, loud snoring, nasal voice quality, chronic nasal congestion, and restless sleep. Enlarged adenoids can contribute to recurrent ear infections and sleep apnea. Adenoids typically grow during early childhood and begin to shrink by age 5-7. If they cause significant problems, surgical removal (adenoidectomy) may be recommended. Common explanations include: Your baby snores mildly during a cold but breathes normally when well. Occasional mouth breathing when congested that resolves when the illness clears.
What should I mention to my pediatrician about does my baby have enlarged adenoids?
You should mention does my baby have enlarged adenoids at your next visit if: Your baby is a habitual mouth breather, even when not sick. Your baby snores loudly most nights. Your baby has recurrent ear infections along with chronic congestion.
Is does my baby have enlarged adenoids normal at 0-3 months?
Adenoid enlargement is uncommon in very young babies. If your newborn has persistent nasal obstruction, other causes (such as choanal atresia or other structural issues) should be evaluated. Normal newborn nasal congestion is common and does not usually indicate adenoid problems.
Is does my baby have enlarged adenoids normal at 3-6 months?
Adenoids begin to grow as the immune system develops. Significant enlargement at this age is unusual. If your baby has persistent nasal breathing difficulty, chronic mouth breathing, or significant snoring, discuss with your pediatrician. These symptoms at this age are more commonly from other causes.
Should I go to the ER for does my baby have enlarged adenoids?
Seek emergency care if your baby has pauses in breathing during sleep (observed apnea), gasping or choking during sleep, or seems to struggle to breathe through their nose constantly, or if your baby has such severe nasal obstruction that feeding is significantly impaired or they are failing to gain weight. When in doubt, call your pediatrician's after-hours line for guidance.
Does does my baby have enlarged adenoids go away on its own?
In many cases, does my baby have enlarged adenoids resolves on its own, especially when your baby snores mildly during a cold but breathes normally when well. By 2-3 years, adenoids are typically at their largest between ages 2-6. If your child has significant sleep disruption from snoring and mouth breathing, recurrent ear infections, or has had ear tubes that are not resolving ear problems, an adenoidectomy may be recommended. The surgery is very common and recovery takes about 1-2 weeks.
AAPMAYO CLINICNIH

References

  1. [1]American Academy of Pediatrics. Adenoid Problems. HealthyChildren.org. AAP
  2. [2]Mayo Clinic. Enlarged adenoids. Mayo Clinic
  3. [3]National Library of Medicine. Adenoid Hypertrophy. StatPearls. NIH

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss Does My Baby Have Enlarged Adenoids?.

Things to mention

  • Describe when you first noticed does my baby have enlarged adenoids and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if your baby is a habitual mouth breather, even when not sick.
  • Mention if your baby snores loudly most nights.
  • Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
  • Bring a list of any questions or observations you want to discuss at the appointment.

Observations to share

  • Your baby is a habitual mouth breather, even when not sick
  • Your baby snores loudly most nights
  • Your baby has recurrent ear infections along with chronic congestion

Urgent signs to report immediately

  • Your baby has pauses in breathing during sleep (observed apnea), gasping or choking during sleep, or seems to struggle to breathe through their nose constantly
  • Your baby has such severe nasal obstruction that feeding is significantly impaired or they are failing to gain weight

My notes

From ismybabyalright.com — free, evidence-based baby health guides

All content follows our editorial policy and is reviewed against published clinical guidelines.

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Bottom line

Most cases of does my baby have enlarged adenoids are normal. Talk to your pediatrician if your baby has pauses in breathing during sleep (observed apnea), gasping or choking during sleep, or seems to struggle to breathe through their nose constantly.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

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Could My Baby Have Tonsillitis?

Tonsillitis (inflammation of the tonsils) is usually caused by viral infections in babies and toddlers. It causes sore throat, difficulty swallowing, fever, and visibly red or swollen tonsils sometimes with white patches. Viral tonsillitis resolves on its own in 5-7 days. Bacterial tonsillitis (strep) is uncommon before age 2-3 but needs antibiotic treatment. See your pediatrician if your baby has a severe sore throat with high fever.

My Baby Breathes Through Their Mouth

Young babies are preferential nose breathers and typically only breathe through their mouths when crying. If your baby is consistently mouth breathing, it is usually due to nasal congestion from a cold or allergies. However, chronic mouth breathing in an infant or toddler, especially during sleep, can sometimes indicate enlarged adenoids, nasal obstruction, or other issues that warrant evaluation.

Baby Sleep Apnea Signs

Brief pauses in breathing (up to about 10 seconds) can be normal in young infants, especially premature babies, as their brainstem matures. However, pauses longer than 20 seconds, breathing accompanied by color changes or gasping, or habitual loud snoring with observed pauses should be evaluated by your pediatrician promptly.

When Should My Baby See a Pediatric ENT?

A pediatric ENT (otolaryngologist) specializes in ear, nose, and throat conditions in children. Common reasons for referral include recurrent ear infections (3+ in 6 months or 4+ in a year), hearing loss, chronic ear fluid, enlarged tonsils or adenoids causing sleep or breathing problems, stridor, chronic sinusitis, airway abnormalities, and neck masses. These specialists can perform ear tube surgery, tonsillectomy, adenoidectomy, and airway evaluations.

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