How to tell if your baby is breathing through their mouth

It is perfectly natural to worry when you think your baby might be having breathing difficulties. A child who breathes primarily through their mouth can experience various symptoms and discomforts. This article details how to identify whether your baby is breathing through their mouth, the signs to watch for, and practical advice on how to address it.

Signs of a mouth-breathing problem

Symptoms of difficult breathing

Babies who breathe through their mouths can show several distinct signs. The first indicator is often noisy breathing. You may hear snoring or wheezing during sleep. Smooth nasal breathing generally does not produce these sounds.

Another common symptom is the appearance of sleep apnoea. This condition is characterised by pauses in breathing during sleep. Sleep apnoea can be particularly concerning and requires immediate medical attention.

Dry mouth and lips

When a baby breathes through their mouth, this can cause noticeable dryness of the mouth and lips. It may also manifest as excessive thirst due to moisture loss during mouth breathing, especially at night.

Observe carefully whether your baby consistently has their mouth slightly open and seems to need to drink more frequently than usual. These behaviours may indicate a regular recourse to mouth breathing rather than nasal breathing.

Possible causes of mouth breathing

Nasal congestion

A common cause of mouth breathing in babies is nasal congestion. When a blocked nose prevents comfortable breathing through the nose, the child has no choice but to breathe through their mouth. Nasal congestion can be caused by a cold, allergies, or even an infection such as bronchiolitis.

In many cases, treating the nasal congestion allows normal breathing to be restored. It is therefore essential to monitor symptoms such as a runny nose, sneezing, or difficulty breathing through the nose.

Anatomical issues

Some babies have anatomical abnormalities that lead them to breathe through their mouths. For instance, enlarged tonsils or adenoids can obstruct the flow of air through the nose. In these situations, a consultation with a paediatrician or an ENT specialist (ear, nose, and throat doctor) is recommended to assess the structure of the child's airways.

Further examinations may be necessary to determine whether medical or surgical intervention is indicated to correct the problem and help the child restore normal nasal breathing.

Consequences of mouth breathing

Impact on sleep

Mouth breathing can considerably affect the quality of your baby's sleep. In addition to sleep apnoea, it can cause frequent night wakings and restless sleep. This lack of restorative sleep can impact the child's overall development.

If you notice that your baby wakes up tired or irritable, it is crucial to consider the quality of their breathing during the night. Consulting a specialist can help to identify the precise cause and propose appropriate solutions.

Dental and facial development

Breathing through the mouth over the long term can also affect the dental and structural development of the face. The habit of keeping the mouth open can cause the teeth to become misaligned, which may subsequently require specific orthodontic treatment.

Regular check-ups at the dentist from an early age allow the proper development of the jaw and teeth to be monitored, and prevent any malformation linked to prolonged mouth breathing.

How to encourage nasal breathing

Humidification and cleaning techniques

There are several simple techniques to encourage a baby to breathe through their nose. Using a humidifier in the room where the child sleeps can help enormously. The additional moisture facilitates nasal breathing by preventing the mucous membranes from drying out.

Nasal rinsing with a gentle saline solution is another effective method for clearing the nasal passages. These rinses should be carried out gently so as not to cause discomfort to the child, but they often succeed in reducing the blockages that cause mouth breathing.

Regular use of saline solution

Installing a humidifier in the bedroom

Monitoring potential environmental allergens

Medical consultation

It is always important to consult a doctor to find the best approach suited to each specific situation. If the problem persists despite your efforts, a healthcare professional may recommend further treatments or more in-depth investigations.

Sometimes medication may be necessary to treat an underlying infection or allergy. At other times, a more detailed examination to rule out any physical obstruction will be required.

Prevention and daily care

Eating habits and hydration

Make sure your baby is well hydrated throughout the day. Offering small amounts of water regularly can help to prevent dry mouth. In addition, encouraging a balanced diet rich in nutrients strengthens the immune system, which can reduce the frequency of respiratory infections.

Also take care not to overdo sugary drinks, which could complicate the maintenance of good hydration and, by extension, affect your baby's breathing.

A healthy environment

Maintaining a clean environment free from allergens is key to avoiding unnecessary nasal congestion. Limit exposure to dust, pet hair, and other common irritants. Simple measures such as washing bedding regularly and using vacuum cleaners fitted with HEPA filters can make a significant difference.

Also consider monitoring the temperature and humidity in the rooms where your baby spends a lot of time. Air that is too dry or too humid can exacerbate respiratory problems.