One of the most common concerns new parents bring to their pediatrician is their baby’s breathing.

A newborn’s breathing can sound surprisingly noisy, fast or even irregular—especially during sleep. While snoring and sleep apnea often receive the most attention, many breathing concerns in infants have completely different causes.

The good news? Most of these conditions are temporary or manageable with proper medical follow-up.

Here are four of the most common respiratory conditions pediatricians evaluate when a baby has breathing symptoms that are not related to snoring.

1. Laryngomalacia: The Most Common Cause of Noisy Breathing

If your baby makes a high-pitched, squeaky sound while breathing in—especially during feeding, crying or lying on their back—it may be laryngomalacia.

This condition occurs because the tissues above the voice box (larynx) are softer than usual and temporarily fall inward during inhalation, partially narrowing the airway. It is the most common cause of stridor, a type of noisy breathing heard in young infants.

Parents often notice:

• A squeaky or high-pitched sound when breathing in
• Noisier breathing while feeding or crying
• Symptoms that become more noticeable during the first few months of life

Fortunately, most babies continue to feed, grow and breathe well, and the condition improves naturally as the airway matures—usually by 12 to 24 months of age.

When should you call your pediatrician?

If your baby has difficulty feeding, poor weight gain, pauses in breathing, bluish lips or appears to be working hard to breathe, they should be evaluated promptly.

2. Transient Tachypnea of the Newborn (TTN)

Sometimes called “Wet Lung”

Some babies breathe much faster than expected during the first hours after birth.

This is often due to Transient Tachypnea of the Newborn (TTN), a temporary condition that occurs when extra fluid remains in the lungs after delivery. Until that fluid is absorbed, breathing can appear rapid or labored.

TTN is more common after cesarean births, early-term deliveries or complicated deliveries, but it can occur in any newborn.

Signs may include:

• Rapid breathing
• Mild chest retractions
• Flaring nostrils
• Extra effort while breathing shortly after birth

The reassuring news is that TTN usually resolves within one to three days with observation and supportive medical care.

3. Periodic Breathing: A Normal Newborn Pattern

One of the most surprising things for new parents is that newborn breathing is not always perfectly regular.

Many healthy babies experience periodic breathing, a normal developmental breathing pattern where they take several quick breaths, pause for a few seconds, and then resume breathing normally.

These pauses are generally brief—typically less than 10 seconds—and happen because the baby’s brain is still learning to regulate breathing.

This pattern often looks like:

• Several quick breaths
• A short pause
• Normal breathing resumes on its own

Periodic breathing is especially common during the first few months of life and gradually disappears as the nervous system matures.

However, if pauses last longer than 20 seconds, your baby turns blue, becomes limp or has difficulty waking, seek immediate medical attention.

4. Bronchiolitis: When the Small Airways Become Inflamed

Unlike the previous conditions, bronchiolitis is an infection rather than a developmental breathing pattern.

Most commonly caused by respiratory viruses—including RSV—it leads to inflammation of the tiny airways in the lungs, making it harder for babies to move air effectively. Infants are particularly vulnerable because their airways are naturally much smaller than those of older children.

Symptoms often include:

• Persistent cough
• Wheezing
• Congestion
• Fast or labored breathing
• Difficulty feeding due to shortness of breath

Most cases are mild and improve with supportive care, but young infants can become dehydrated or require medical monitoring if breathing becomes difficult.

When Should Parents Be Concerned?

Many breathing sounds in newborns are part of normal development, but parents know their baby best.

Contact your pediatrician if your baby:

• Is breathing much faster than usual.
• Has persistent noisy breathing that seems to worsen.
• Struggles during feedings.
• Is not gaining weight well.
• Shows chest retractions (the skin pulling in around the ribs or neck).
• Has blue lips, long pauses in breathing or appears unusually sleepy or difficult to wake.

Healthy infant sleep begins with healthy breathing—but not every unusual breathing sound is a sleep disorder.

Understanding what is normal, what is temporary and what requires medical evaluation can help parents feel more confident while ensuring babies receive the care they need when it matters most.

If you’re ever unsure, trust your instincts and reach out to your pediatrician. Peace of mind is always worth the conversation.