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This can cause their lower lips to quiver. The baby’s muscles tense up, and his arms and legs jerk. Simply put, the startle reflex can be described as an “involuntary reaction newborns have.” You can easily observe the baby quiver upon hearing any loud noise. There are several reasons behind a baby’s lip quivering : The startle reflex Possible Reasons Behind Newborn’s Lip Quivering Monitor your baby’s health and development and discuss any strange symptoms or behaviors with your medical professional. In rare cases, a baby’s lips quivering can indicate an underdeveloped nervous system or neurological problems. Shivering can cause your baby’s lips to quiver if they’re cold. You might notice your baby’s lip quiver when they cry. There are other causes of quivering lips too. This is common in the first weeks of life. Your child may have involuntary lip quivers due to uncoordinated facial muscles. Quivering lips usually indicate your baby’s developing nervous system. Baby lip quivers are common but usually harmless. Worrying about your newborn’s behavior as a first-time parent is normal. What Does it Mean if My Newborn’s Lip Is Quivering? The trembling of arms and legs in a newborn is normal when they cry, but it should stop within a month or two. It is common for newborn babies to cover themselves when they are hungry, which causes quivering lips.Īn immature nervous system causes mostly harmless reflexes, such as chin trembling, which will disappear in 3 or 4 months.

Sometimes, the lip quivers can be a sign of a medical issue, such as an oral motor disorder. But if your baby’s lip quiver persists, it’s always a good idea to check in with a doctor to be on the safe side. Lip quivering will lessen as your child’s nervous system matures and he/she becomes accustomed to the outside world. It’s a common reflex for newborns and isn’t usually a cause for concern. But fear not this article will explain the mystery of newborns’ quivering lips.Ī baby may tremble or shake his bottom lip when he is upset or cold.

You panic, wondering what’s wrong with your baby. You’re holding your precious little bundle of joy, and suddenly, their lips start trembling like a leaf in the wind.

Baby’s Lip quivering is a phenomenon most parents are familiar with.