Mama Adoptation

Baby Sleeping with Mouth Open: Should You Worry

Why baby sleep with open mouth

Understanding why a baby sleeps with their mouth open can be a concern for many parents. Observing your baby resting with their mouth open might trigger worry, prompting questions about potential causes and implications. This common occurrence, often marked by various reasons such as nasal congestion, natural comfort, or underlying concerns, can lead parents to seek insight into its significance.According to  Sleep foundation Organization mouth breathing is a sign of obstructive sleep apnea. Exploring the reasons behind this behavior and recognizing when it might signal a concern is crucial in ensuring the well-being of your little one. 

As an expert pediatrician, I am mentioning reasons behind babies sleeping  with an open mouth, its signs, treatments and complications. Keep reading!

Why is My Baby Sleeping With Their Mouth Open?

Babies sleeping with their mouths open can stem from several reasons. Having a blocked nose might cause them to breathe through their mouths because of nasal congestion. Some babies naturally find this sleeping position more comfortable. During deep sleep, relaxed facial muscles can cause the mouth to open, a common occurrence in younger infants. Occasionally, it might indicate an underlying issue like enlarged adenoids, tonsil problems, or respiratory concerns. If your baby seems at ease and doesn’t show distress, open-mouth sleeping might not be problematic. However, persistent mouth breathing or other symptoms should prompt a visit to a pediatrician to ensure there are no underlying issues causing this behavior.

Is it Normal For a Baby to Sleep With Eyes Open?

Yes, it can be considered normal for some babies to sleep with their eyes partially open. This occurrence is known as nocturnal lagophthalmos. In most cases, it doesn’t indicate any underlying health issues and tends to resolve on its own as the baby grows. However, if it’s frequent or accompanied by other concerning symptoms, it’s advisable to consult a pediatrician to rule out any potential problems.

What are the Signs of Sleeping With Your Mouth Open?

There are many signs that your baby might be sleeping with their mouth open.I have mentioned some of them, keep reading!

1. Dry lips and mouth:

When your baby breathes through their mouth at night, their lips and mouth may become dry and cracked. This is because the saliva that normally helps to keep their mouth moist is not being produced as efficiently when they are mouth breathing.

2. Snoring:

Snoring is a common sign of mouth breathing. This is because when your baby breathes through their mouth, the air has to travel through a narrower passage than when they breathe through their nose. This can cause the soft tissues in their throat to vibrate, which produces the snoring sound.

3. Restless sleep:

Your baby may toss and turn more frequently at night if they are struggling to breathe through their nose. This is because they may not be getting enough oxygen when they are mouth breathing, which can make them feel uncomfortable and restless.

4. Mouth breathing during the day:

If your baby regularly breathes through their mouth during the day, it is more likely that they will also breathe through their mouth at night.

5. Changes in facial appearance:

Over time, mouth breathing can cause changes in your baby’s facial appearance. These changes can include a narrow palate, a recessed chin, and an elongated face. If you are concerned that your baby might be sleeping with their mouth open, talk to your doctor. They can assess your baby’s breathing patterns and rule out any underlying medical conditions.

Here are some additional things to keep in mind:

  • Occasional mouth breathing is normal: It is normal for babies to breathe through their mouths occasionally, especially when they are congested or have a cold.
  • Some babies are more prone to mouth breathing than others: Babies with allergies, enlarged tonsils or adenoids, or a deviated septum are more likely to breathe.
  • Mouth breathing can have serious consequences: If left untreated, mouth breathing can lead to a number of health problems, including sleep apnea, dental problems, and developmental delays.

If you are concerned about your baby’s mouth breathing, please consult with your doctor to identify the cause and determine if treatment is necessary.

Related: Why Baby Sleep More Than Usual? (Causes And Consideration)

Related: Why Do Babies Sleeping More Than Usual? (Causes And Consideration

What’s the Treatment When Babies Sleep With Their Mouth Open? 

Treatment for mouth breathing in babies depends on the underlying cause. Here are some common treatments:

  1. Addressing underlying medical conditions: If your baby’s mouth breathing is caused by an allergy, enlarged tonsils or adenoids, or a deviated septum, treating these conditions may resolve the mouth breathing.
  1. Nasal saline sprays or drops: These can help loosen and clear mucus from the nasal passages, making it easier for your baby to breathe through their nose.
  1. Humidifier: Adding moisture to the air can help prevent your baby’s nasal passages from drying out and becoming congested.
  1. Positioning: Elevating your baby’s head while they sleep may help keep their airways open and reduce mouth breathing.
  1. Myofunctional therapy: This type of therapy involves exercises and techniques to help strengthen the muscles around the mouth and throat, which can improve breathing patterns and reduce mouth breathing.
  1. Oral appliance therapy: In some cases, an oral appliance may be recommended to keep your baby’s mouth closed during sleep. This is typically only used as a last resort.

It is important to consult with your doctor to determine the best course of treatment for your baby. They can help you identify the cause of your baby’s mouth breathing and recommend the most appropriate treatment options.

Additional Tips for Preventing Mouth Breathing in Babies:

As an pediatrician, I am listing down some additional tips to prevent mouth breathing in babies:

  1. Breastfeed your baby for as long as possible. Breastfeeding can help strengthen your baby’s facial muscles and tongue, which may help prevent mouth breathing.
  2. Encourage your baby to breathe through their nose. When your baby is sick or congested, encourage them to breathe through their nose by gently closing their mouth.
  3. Avoid smoking around your baby. Secondhand smoke can irritate your baby’s nasal passages and make them more likely to breathe through their mouth.
  4. Keep your baby’s bedroom clean and dust-free. Dust and allergens can irritate your baby’s nasal passages and make them more likely to breathe through their mouth.
  5. Make sure your baby gets enough sleep. Adequate sleep helps your baby’s body rest and repair itself, which can help prevent mouth breathing.

By following these tips, you can help your baby develop healthy breathing habits and reduce their risk of mouth breathing.

Possible complications if your baby continues to sleep with their mouth open

While occasional mouth breathing during sleep is normal, if your baby constantly sleeps with their mouth open, it could lead to various complications. Here are some potential consequences to watch out for:

1. Dry mouth and throat: When your baby breathes through their mouth during sleep, their mouth and throat tend to become dry due to inadequate saliva production. This dryness can cause discomfort, cracked lips, and an increased risk of throat infections.

2. Snoring and sleep disturbances: Mouth breathing can lead to snoring as the air passes through the narrower nasal passages, causing vibrations in the soft tissues of the throat. This snoring can disrupt sleep patterns, leading to daytime fatigue and irritability.

3. Dental issues: Prolonged mouth breathing can affect oral health, causing problems like malformed teeth, tooth decay, and gum disease. Dry air constantly passing over the teeth can erode enamel, causing cavities to form.

4. Facial changes: Over time, mouth breathing can alter facial features, leading to a narrow palate, recessed chin, and elongated face. This is due to the altered muscle development and bone growth caused by the persistent mouth breathing pattern.

5. Developmental delays: In severe cases, mouth breathing can hinder a child’s development, affecting their cognitive abilities and overall growth. The lack of adequate sleep due to mouth breathing can impact their learning and behavioral patterns.

6. Sleep apnea: In extreme cases, mouth breathing can lead to obstructive sleep apnea, a serious condition characterized by interrupted breathing during sleep. This can cause oxygen deprivation, leading to heart problems, high blood pressure, and other health complications.

If you notice your baby constantly sleeping with their mouth open, it’s important to consult your pediatrician to determine the underlying cause and discuss potential treatment options. Early intervention is crucial to prevent the onset of any complications and ensure your baby’s overall health and well-being.


Understanding why your baby sleeps with their mouth open can ease concerns and guide parents in addressing potential issues. While occasional mouth breathing is normal, persistent patterns might indicate underlying concerns, such as nasal congestion, relaxed facial muscles, or structural issues like enlarged adenoids or tonsils. Recognizing signs, seeking medical advice for prolonged mouth breathing, and exploring treatment options tailored to the cause can alleviate potential complications. Engaging in preventive measures and consulting healthcare professionals when needed are crucial steps in ensuring your baby’s well-being and fostering healthy breathing habits.


1. What if my baby sleeps with their mouth open occasionally?

Occasional mouth breathing during sleep is generally normal, especially when babies are congested or have a cold. However, if it becomes a consistent pattern or is accompanied by other symptoms, consulting a pediatrician is recommended.

2. Can allergies cause my baby to sleep with their mouth open?

Yes, allergies can contribute to mouth breathing in babies. Allergic reactions can lead to nasal congestion, making it difficult for babies to breathe through their noses, resulting in mouth breathing during sleep.

3. Should I be concerned if my baby snores occasionally while sleeping?

Occasional snoring in babies might not always be a cause for concern. However, persistent or loud snoring, especially when accompanied by mouth breathing, could indicate potential issues, and it’s advisable to seek advice from a healthcare professional.

4. How can I help my baby breathe through their nose if they tend to sleep with their mouth open?

Using saline drops, elevating your baby’s head while sleeping, and ensuring a clean and dust-free sleeping environment can help clear nasal passages and encourage nasal breathing.

5. Are there any long-term effects of mouth breathing in babies?

Prolonged mouth breathing in babies can potentially lead to various complications like dry mouth and throat, dental issues, facial changes, and in severe cases, developmental delays or sleep apnea. Seeking medical advice and appropriate intervention can prevent long-term consequences.

6. Can mouth breathing in babies be corrected?

In many cases, treating underlying causes such as allergies, nasal congestion, or structural issues can help correct mouth breathing in babies. Myofunctional therapy, oral appliances, and lifestyle adjustments can also assist in improving breathing habits.

7. When should I consult a pediatrician regarding my baby’s mouth breathing?

If your baby constantly sleeps with their mouth open, experiences persistent dry mouth or throat, has trouble breathing, or displays other concerning symptoms like changes in facial appearance, it’s advisable to seek medical advice for proper evaluation and guidance.

Read also: What to do when your baby won’t sleep in their crib? (A Comprehensive Guide)

Emiley Walker Author & Writer | Parenting and BabyCare at Mamaadoptation About I'm a passionate writer committed to using storytelling to support and uplift families on their fostering and kinship care journeys. At Mama Adoption, I create engaging content that empowers parents and caregivers navigating the joys and challenges of raising amazing children. Expertise Childcare Parent coaching Parenting Attachment parenting Parent-child Relationships Baby Products Newborn Baby Knowledge of different parenting approaches (e.g., authoritative, permissive, authoritarian) Strategies for managing and modifying children's behavior communication techniques Understanding child psychology Specialized knowledge in supporting children with disabilities Highlights Certified in Family dynamics, Parenting guide, Effective communication skills. Education Emily Walker holds a Master's degree in parenting guidelines from Air university where she cultivated her expertise in understanding child development, effective communication, and family dynamics. Her academic journey ignited a lifelong passion for unraveling the complexities of parenting and helping others on their parenting journeys. Experience Emily Walker's professional journey is marked by a wealth of experience: Nurse (RN) - Pediatrics or Mother-Baby Unit Babysitter Authorship: Emily has authored numerous articles, essays, and books on parenting guidelines, all crafted with a blend of academic knowledge and practical wisdom. Parenting Workshops: She has conducted workshops and seminars, both online and in-person, providing parents with actionable tools and strategies. Consulting: Emily has worked as a parenting consultant, offering personalized guidance to families facing unique challenges. Media Contributions: Her insights have been featured in various publications, including parenting magazines and television programs. Emily's Approach to Parenting: Emily advocates for: Positive Discipline: Promoting non-punitive methods for teaching and guiding children. Open Communication: Fostering open and respectful communication within families. Child-Centered Parenting: Prioritizing the well-being and development of the child while supporting parents in their roles. Thank you for visiting Emily Walker's author page. Join her on a journey of discovery and empowerment as she guides you through the fascinating world of parenting guidelines. Together, let's nurture the next generation with love, knowledge, and understanding.

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