Can Babies Breathe Through Their Mouth? What Parents Should Know
By Dr. Zainab Arsiwala, Fellowship-Trained Pediatric ENT Surgeon, DHA Licensed, Dubai | Medically Reviewed: July 2026
Watching your baby sleep often brings peace of mind—but it can also raise questions. If you’ve noticed your little one sleeping with their mouth open or breathing through their mouth while awake, you may wonder whether it’s normal or a sign of an underlying problem.
Many parents ask, “Can babies breathe through their mouth?” The short answer is that healthy newborns are designed to breathe primarily through their nose.
While occasional mouth breathing can occur, especially during crying or temporary nasal congestion, persistent mouth breathing in babies should not be ignored.
Understanding what is normal and when to seek medical advice can help protect your child’s breathing, feeding, sleep, and overall development.
Can babies breathe through their mouth?
One of the most common concerns among new parents is whether newborn mouth breathing is normal.
Babies, especially during the first few months of life, are considered preferential nose breathers. They have a special anatomy which enables them to breathe peacefully through their nose while feeding, making it easier to breastfeed and bottle-feed.
If a baby has to breathe through its mouth, it can, but only in certain situations; usually when their nose is blocked or when they are crying. If your infant has a habit of breathing through his or her mouth during sleep, you may suspect there is dysfunction of your baby’s nose.
Why are newborns designed to breathe through their nose?
A baby’s nose plays an important role beyond simply moving air into the lungs. Nasal breathing helps:
- Warm and humidify air prior to reaching lungs
- Removes dust, allergens and other particulates
- Feed comfortably without apnea.
- Encourage good facial and jaw growth
- Promote good sleep.
Because of these important functions, persistent newborn mouth breathing warrants medical evaluation rather than dismissal as a harmless habit.
What causes baby mouth breathing?
Several conditions can make it difficult for babies to breathe comfortably through their nose. Some are temporary, while others may require specialist treatment. Common causes are:
Temporary nasal congestion
Babies have very small nasal passages that can become blocked by mucus, dry air, or mild viral infections. This is one of the most common reasons for temporary baby mouth breathing.
Sniffles, or allergies/nose irritation
Allergies or environmental irritants can also cause nasal swelling, though rarely in very young infants, and can disrupt normal breathing.
Enlarged adenoids
The enlarged adenoids may partially block the airway behind the nose and cause mouth breathing, especially while sleeping, as the children grow.
Structural differences
Certain babies are born with narrow nasal passages or other anatomical conditions that restrict airflow and contribute to newborn mouth breathing.
Other airway conditions
Airway abnormalities or ENT conditions can sometimes make nasal breathing difficult. A pediatric ENT specialist should assess these to identify the cause.
Signs that baby mouth breathing may need medical attention
Occasional mouth breathing during a cold is usually not concerning. However, parents should arrange an evaluation if they notice:
- Mouth breathing most of the time
- Open-mouth sleeping daily
- Noisy breathing or snoring
- Difficulty feeding
- Frequent pauses during feeding to catch their breath
- Poor weight gain
- Restless sleep
- Frequent ear infections
- Persistent nasal blockage without improvement
When these symptoms occur together, they may suggest an underlying ENT condition rather than temporary congestion.
Can newborn mouth breathing affect development?
Persistent mouth breathing may affect more than just breathing.
If left untreated over time, chronic mouth breathing has been associated with:
- Poor sleep quality
- Feeding difficulties
- Increased risk of recurrent ear infections
- Changes in facial growth and jaw development
- Speech development concerns in some children
- Behavioral changes related to poor-quality sleep
Not every child who breathes through their mouth will experience these issues, but identifying the cause early can help prevent potential complications.
How is the cause of mouth breathing diagnosed?
Treatment depends entirely on the underlying cause.
Your child’s ENT specialist may recommend:
Conservative care
For temporary congestion, treatment may include:
- Saline nasal drops
- Gentle nasal suctioning
- Maintaining proper humidity at home
- Monitoring symptoms until the congestion resolves
Medical treatment
If inflammation, allergies, or infection are contributing to the problem, medications may be recommended based on your child’s age and diagnosis.
Surgical treatment
In selected cases, procedures such as adenoid removal or correction of structural nasal problems may be considered to restore normal breathing.
Every treatment plan is individualized to ensure the safest and most effective outcome for the child.
When should parents seek help?
Parents should arrange an evaluation if they are concerned that their child consistently breathes through their mouth.
Medical advice is especially important if:
- Your baby struggles to feed
- You notice persistent newborn mouth breathing beyond temporary congestion
- Your child snores frequently
- Breathing seems labored during sleep
- There are repeated ear, nose, or throat infections
- You are unsure whether your baby’s breathing pattern is normal
Early assessment can provide reassurance when everything is developing normally—or allow prompt treatment if an underlying condition is present.
Can baby mouth breathing be prevented?
Although not all causes of mouth breathing can be avoided, parents can help their child breathe through their nose by:
- Clearing the baby’s nose during colds
- Applying saline drops as directed by a health care provider
- Using a facemask to keep away from cigarette smoke and other irritating air particles
- Keeping the right levels of humidity indoors.
- Don’t wait for symptoms to go away before seeking medical advice!
The earlier breathing concerns are addressed, the easier it is to support healthy sleep, feeding, and development.
Trust Dr. Zainab Arsiwala for expert pediatric ENT care in Dubai
If you’re wondering, can babies breathe through their mouth, or you’re concerned about persistent baby mouth breathing or newborn mouth breathing, an expert evaluation can help identify the underlying cause and provide the right treatment.
As one of the few surgeons in Dubai to hold both a DHA Specialty ENT Surgeon license and a DHA Specialist Pediatric ENT Surgeon license, Dr. Zainab Arsiwala combines advanced international training with a compassionate, child-focused approach to caring for babies and children with routine and complex ENT conditions.
Whether your child is experiencing breathing difficulties, feeding challenges, or recurrent ear, nose, and throat concerns, Dr. Arsiwala provides personalized care to support healthy breathing and development.
About the author
Dr. Zainab Arsiwala
Dr. Zainab Arsiwala is a fellowship-trained Pediatric ENT Surgeon in Dubai, holding dual DHA licenses in both ENT and Specialist Pediatric ENT, one of the few doctors in the region with this distinction.
She trained at Al Jalila Children’s Hospital, Dubai, with advanced airway observerships at CHUV (Switzerland) and Cincinnati Children’s Hospital (USA). She holds a Fellowship from the European Board of Otorhinolaryngology Head and Neck Surgery (ORL-HNS) and a DNB in ENT.
Currently practising at Tarabichi ENT Institute and JTS Medical Centre, Dubai, she provides evidence-based, child-focused ENT care for conditions ranging from ear infections and hearing loss to complex airway and syndromic cases.
Medical Disclaimer
This article is for informational purposes only. For personalised advice, diagnosis, or treatment tailored to your condition, book a consultation with Dr. Zainab Arsiwala.
