when do babies mouth breathe


When Do Babies Mouth Breathe?

Mouth breathing is an issue for babies that can have negative impacts if not identified and managed properly. It can cause sleep disturbances, dental irregularities, and general health problems if left untreated. Knowing when to spot signs of mouth breathing in babies is essential in determining when an issue could be present and seeking proper medical advice.

Signs of Mouth Breathing in Babies

Babies who mouth breathe will exhibit some of the following signs:

  • Flared nostrils during breathing
  • Lips parted during breath
  • Inability to sleep through the night
  • Excessive snoring
  • Tongue rest on the bottom of the mouth while sleeping
  • Oral Thrush

When Should Babies Mouth Breathing be Checked?

If a baby is exhibiting any of the above symptoms, it is important to speak with a healthcare provider to understand if mouth breathing is an issue they should be monitored. The American Academy of Pediatrics recommends that babies should be checked for mouth breathing at 6-9 months. At this stage, it is usually understandable if a baby is still having difficulty with active nose breathing or needs help with single-tasking.

Due to the possibility of a baby having a physical problem caused due to mouth breathing, it is also important to check for anatomical abnormalities that may be causing the mouth breathing such as enlarged tonsils. This can usually be seen through a physical examination.

If a baby is having difficulty with nose breathing, it is important to treat this problem. In this situation, it is important to talk to your healthcare provider to determine the best route and if they require treatment to help them breathe properly.


Mouth breathing can be a cause for concern when it comes to babies. It is important to be aware of the initial signs, and ensure that it is checked by a healthcare provider if there are any indications that mouth breathing may be taking place. With the right medical advice and follow-up, babies can have a healthy and proper development if mouth breathing is properly treated.