Baby's Lip Quivering
Medically reviewed by Dr. Michael Okonkwo, MD, FAAP · Board-Certified Neonatologist
Content reviewed against published AAP, NIH guidelines
Last reviewed:
If your baby has been diagnosed with or you suspect baby's lip quivering, here is what the evidence says.
The short answer
Lip quivering in newborns is very common and usually completely normal. It is caused by the immature nervous system and typically occurs when baby is cold, hungry, tired, or crying. This should resolve on its own within the first few months as the nervous system matures.
Key takeaways
- Lip quivering in newborns is very common and usually completely normal. It is caused by the immature nervous system and typically occurs when baby is cold, hungry, tired, or crying. This should resolve on its own within the first few months as the nervous system matures.
- Usually normal when: Brief lip quivering when baby is cold, crying, or hungry
- Call your doctor if: Sustained rhythmic movements of the face, lips, or tongue that cannot be interrupted
- Varies by age — see the age-by-age breakdown below
“Fever itself is not an illness — rather, it is a sign or symptom that the body is fighting an infection. Fever stimulates certain defenses, such as the white blood cells, which attack and destroy invading bacteria.”
This is one of the most common questions parents ask. Searching for answers means you care.
What Parents Should Know
According to AAP, NIH guidelines, lip quivering in newborns is very common and usually completely normal. It is caused by the immature nervous system and typically occurs when baby is cold, hungry, tired, or crying. This should resolve on its own within the first few months as the nervous system matures. At 0-1 month, lip quivering or trembling is extremely common in newborns and is almost always normal. The newborn nervous system is still immature, and the pathways that control fine muscle movements are not fully developed. You may notice the lower lip quivering when baby is exposed to cooler temperatures, during or after crying, when hungry, or during diaper changes. These brief episodes of lip trembling are a normal part of the nervous system maturing and are not seizures. Seizures in newborns look different: they involve rhythmic, sustained movements that cannot be stopped by gently holding the limb, and may include eye deviation, apnea, or changes in consciousness. It is generally considered normal when brief lip quivering when baby is cold, crying, or hungry. However, you should contact your pediatrician promptly if sustained rhythmic movements of the face, lips, or tongue that cannot be interrupted.
Normal vs. Concerning
When to Seek Immediate Care
- Sustained rhythmic movements of the face, lips, or tongue that cannot be interrupted
- Lip quivering accompanied by eye rolling, stiffening, or changes in breathing or consciousness, which may indicate seizure
- Baby is unresponsive or difficult to arouse during or after episodes
By Age
What to expect by age
0-1 month
Lip quivering or trembling is extremely common in newborns and is almost always normal. The newborn nervous system is still immature, and the pathways that control fine muscle movements are not fully developed. You may notice the lower lip quivering when baby is exposed to cooler temperatures, during or after crying, when hungry, or during diaper changes. These brief episodes of lip trembling are a normal part of the nervous system maturing and are not seizures. Seizures in newborns look different: they involve rhythmic, sustained movements that cannot be stopped by gently holding the limb, and may include eye deviation, apnea, or changes in consciousness.
1-3 months
Lip quivering gradually decreases as the nervous system matures. It may still occur with temperature changes, tiredness, or crying. If the quivering is becoming more frequent, more intense, or occurring at unexpected times (not triggered by cold, crying, or hunger), mention it to your pediatrician.
3-6 months
Most lip quivering has resolved by this age. Occasional trembling with crying or cold is still normal. Persistent or new-onset trembling at this age should be evaluated.
6-12 months
Lip quivering from nervous system immaturity should be resolved. Any new trembling or quivering at this age should be discussed with your pediatrician.
What to Tell Your Pediatrician
- Describe when you first noticed baby's lip quivering and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if lip quivering that seems to be getting more frequent rather than less.
- Mention if quivering that occurs when baby is calm and warm with no obvious trigger.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Brief lip quivering when baby is cold, crying, or hungry
- Quivering that stops on its own within seconds
- Baby is otherwise alert, feeding well, and developing normally
- Episodes decrease over the first few months
- Lip quivering that seems to be getting more frequent rather than less
- Quivering that occurs when baby is calm and warm with no obvious trigger
- Quivering persists beyond 3 months of age
- Sustained rhythmic movements of the face, lips, or tongue that cannot be interrupted
- Lip quivering accompanied by eye rolling, stiffening, or changes in breathing or consciousness, which may indicate seizure
- Baby is unresponsive or difficult to arouse during or after episodes
What You Can Do at Home
- Keep track of when you notice baby's lip quivering — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that brief lip quivering when baby is cold, crying, or hungry — this is generally within the range of normal.
- At 0-1 month, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Follow any care instructions from your pediatrician. Keep a written log of symptoms to bring to appointments.
- While monitoring at home, seek immediate care if sustained rhythmic movements of the face, lips, or tongue that cannot be interrupted.
Related Conditions
Baby's Chin Trembling
Chin trembling in newborns is very common and typically normal. It results from the immature nervous system and usually occurs when baby is cold, hungry, startled, or crying. These brief, self-resolving tremors diminish as the nervous system matures over the first 2-3 months.
jitteriness vs seizures
Baby's Tongue Color Changes (Blue or White)
A white coating on baby's tongue after feeding is usually just milk residue, though a persistent white coating that does not wipe off may be oral thrush. A blue tongue in a baby is more concerning and may indicate oxygen issues that need immediate medical evaluation.
Related Resources
Frequently asked questions
Is baby's lip quivering normal?
When should I call the doctor about baby's lip quivering?
When is baby's lip quivering normal?
What causes baby's lip quivering?
What should I mention to my pediatrician about baby's lip quivering?
Is baby's lip quivering normal at 0-1 month?
Is baby's lip quivering normal at 1-3 months?
Should I go to the ER for baby's lip quivering?
Does baby's lip quivering go away on its own?
References
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Baby's Lip Quivering.
Things to mention
- Describe when you first noticed baby's lip quivering and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if lip quivering that seems to be getting more frequent rather than less.
- Mention if quivering that occurs when baby is calm and warm with no obvious trigger.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Lip quivering that seems to be getting more frequent rather than less
- Quivering that occurs when baby is calm and warm with no obvious trigger
- Quivering persists beyond 3 months of age
Urgent signs to report immediately
- Sustained rhythmic movements of the face, lips, or tongue that cannot be interrupted
- Lip quivering accompanied by eye rolling, stiffening, or changes in breathing or consciousness, which may indicate seizure
- Baby is unresponsive or difficult to arouse during or after episodes
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of baby's lip quivering are normal. Talk to your pediatrician if sustained rhythmic movements of the face, lips, or tongue that cannot be interrupted.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
Was this page helpful?
Related Medical Concerns
Baby's Chin Trembling
Chin trembling in newborns is very common and typically normal. It results from the immature nervous system and usually occurs when baby is cold, hungry, startled, or crying. These brief, self-resolving tremors diminish as the nervous system matures over the first 2-3 months.
Baby's Tongue Color Changes (Blue or White)
A white coating on baby's tongue after feeding is usually just milk residue, though a persistent white coating that does not wipe off may be oral thrush. A blue tongue in a baby is more concerning and may indicate oxygen issues that need immediate medical evaluation.
My Baby's Head Shape Looks Abnormal
Many babies develop temporary head shape irregularities that are completely normal. A cone-shaped head from vaginal delivery reshapes within days. Mild positional flattening (plagiocephaly) from sleeping on the back is very common and usually improves with repositioning and tummy time. However, head shape changes involving ridges, a persistently bulging fontanelle, or rapid head growth changes should be evaluated to rule out craniosynostosis.
Achondroplasia (Dwarfism) in Babies
Achondroplasia is the most common form of short-limbed dwarfism, affecting about 1 in 15,000 to 40,000 births. It is caused by a mutation in the FGFR3 gene and is usually apparent at birth with characteristic features including short limbs, a larger head, and a prominent forehead. Intelligence is normal. With monitoring for specific complications and supportive care, children with achondroplasia lead full, active, and independent lives.
Adenoid Hypertrophy and Breathing
Adenoids are lymphoid tissue located behind the nose that help fight infection in young children. When adenoids become enlarged (adenoid hypertrophy), they can block the nasal airway, causing chronic mouth breathing, snoring, nasal speech, and sleep-disordered breathing. Enlarged adenoids are most common between ages 2-7 and are a leading cause of obstructive sleep apnea in young children. Treatment ranges from watchful waiting and nasal steroids to surgical removal (adenoidectomy) if breathing or sleep is significantly affected.
Adrenoleukodystrophy (ALD) in Babies
X-linked adrenoleukodystrophy (X-ALD) is a genetic disorder affecting about 1 in 17,000 newborns, caused by mutations in the ABCD1 gene on the X chromosome. It primarily affects boys and impairs the breakdown of very long-chain fatty acids (VLCFAs), which accumulate and damage the myelin sheath in the brain and the adrenal glands. The most severe form, cerebral ALD, typically affects boys between ages 4-10 with rapid neurological decline. Newborn screening now enables early detection, and hematopoietic stem cell transplant or gene therapy performed before significant brain involvement can be life-saving.