Medical Conditions

My Baby Has a Split or Cut Lip

Medically reviewed by Dr. Michael Okonkwo, MD, FAAP · Board-Certified Neonatologist

Content reviewed against published AAP, Mayo Clinic, NIH guidelines

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If your baby has been diagnosed with or you suspect has a split or cut lip, here is what the evidence says.

The short answer

Split lips from falls are very common in babies and toddlers. The lip area bleeds heavily because of its rich blood supply, so injuries often look worse than they are. Apply firm pressure with a clean cloth for 15 minutes. Small cuts that do not cross the border between the lip skin and facial skin (the vermilion border) usually heal well on their own. Cuts that cross this border, are deep, gaping, or very long may need stitches for the best cosmetic result.

Key takeaways

  • Split lips from falls are very common in babies and toddlers. The lip area bleeds heavily because of its rich blood supply, so injuries often look worse than they are. Apply firm pressure with a clean cloth for 15 minutes. Small cuts that do not cross the border between the lip skin and facial skin (the vermilion border) usually heal well on their own. Cuts that cross this border, are deep, gaping, or very long may need stitches for the best cosmetic result.
  • Usually normal when: Bleeding from a small lip cut stops within 15 minutes of firm pressure
  • Call your doctor if: Bleeding does not stop after 15-20 minutes of steady, firm pressure
  • Varies by age — see the age-by-age breakdown below
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What Parents Should Know

According to AAP, Mayo Clinic, NIH guidelines, split lips from falls are very common in babies and toddlers. The lip area bleeds heavily because of its rich blood supply, so injuries often look worse than they are. Apply firm pressure with a clean cloth for 15 minutes. Small cuts that do not cross the border between the lip skin and facial skin (the vermilion border) usually heal well on their own. Cuts that cross this border, are deep, gaping, or very long may need stitches for the best cosmetic result. At 0-3 months, lip injuries are rare in young babies. If your newborn has a lip cut, apply gentle pressure and contact your pediatrician. Ensure it is from an identifiable cause. Lip bruises in young babies without a clear cause should always be evaluated. It is generally considered normal when bleeding from a small lip cut stops within 15 minutes of firm pressure. However, you should contact your pediatrician promptly if bleeding does not stop after 15-20 minutes of steady, firm pressure.

Sources: [1], [2], [3]

Normal vs. Concerning

Usually Normal
Worth Discussing
Bleeding from a small lip cut stops within 15 minutes of firm pressure
Bleeding does not stop after 15-20 minutes of steady, firm pressure
The lip is swollen but the cut is small and the edges come together on their own
A large or deep laceration goes all the way through the lip, or the cut crosses the lip border and needs alignment for proper healing - seek medical care within 6-8 hours
Your baby is eating and drinking normally within a few hours of the injury
A lip cut is larger than half an inch or seems deep

By Age

What to expect by age

0-3 months

Lip injuries are rare in young babies. If your newborn has a lip cut, apply gentle pressure and contact your pediatrician. Ensure it is from an identifiable cause. Lip bruises in young babies without a clear cause should always be evaluated.

3-6 months

As babies put everything in their mouths and begin to move more, minor lip injuries can occur. A split lip from bumping against a toy or surface will bleed and swell but usually heals quickly. Apply pressure, then apply a cold compress wrapped in cloth to reduce swelling. Continue breastfeeding or bottle feeding as normal.

6-12 months

Falls while pulling up or cruising are a common cause of split lips. After controlling bleeding, examine the cut. If it is inside the lip only and less than half an inch, it will likely heal without stitches. The inside of the mouth heals remarkably fast. Offer cool foods and keep the area clean.

12-24 months

Toddler lip injuries are extremely common. Swelling from a lip injury may make the lip look alarmingly large. Ice wrapped in cloth applied for 10-15 minutes helps reduce swelling. If the cut crosses the vermilion border (the line where lip meets face skin), it may need stitches for cosmetic alignment. See your doctor within 6-8 hours for best results.

2-3 years

Active play leads to frequent lip bumps and cuts. Teach your child to run with their mouth closed. After a lip injury, watch for signs of infection over the next few days: increasing redness, warmth, swelling, or pus. Also check the teeth for looseness or damage after any fall that affects the mouth area.

What to Tell Your Pediatrician

  • Describe when you first noticed has a split or cut lip and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if a lip cut is larger than half an inch or seems deep.
  • Mention if the cut crosses the vermilion border (lip line) and you want to know if stitches are needed.
  • 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

Probably normal when...
  • Bleeding from a small lip cut stops within 15 minutes of firm pressure
  • The lip is swollen but the cut is small and the edges come together on their own
  • Your baby is eating and drinking normally within a few hours of the injury
Mention at your next visit when...
  • A lip cut is larger than half an inch or seems deep
  • The cut crosses the vermilion border (lip line) and you want to know if stitches are needed
  • The lip remains significantly swollen after 48 hours
Act now when...
  • Bleeding does not stop after 15-20 minutes of steady, firm pressure
  • A large or deep laceration goes all the way through the lip, or the cut crosses the lip border and needs alignment for proper healing - seek medical care within 6-8 hours

What You Can Do at Home

  • Keep track of when you notice has a split or cut lip — noting the time of day, duration, and any triggers can help your pediatrician.
  • Remember that bleeding from a small lip cut stops within 15 minutes of firm pressure — this is generally within the range of normal.
  • At 0-3 months, 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 bleeding does not stop after 15-20 minutes of steady, firm pressure.

My Baby Bit or Cut Their Tongue

Tongue injuries are common in babies and toddlers and often look worse than they are because the tongue has an excellent blood supply. Most tongue lacerations heal well without stitches. Apply gentle pressure with a clean cloth for 15 minutes. Small cuts (less than half an inch) on the tip or surface usually heal quickly on their own. Cuts that are deep, gaping, or on the edge of the tongue may need medical evaluation for possible sutures.

My Baby's Tooth Was Knocked Out or Loosened by a Fall

If a baby tooth is knocked out, do NOT try to replant it (unlike permanent teeth). Apply gentle pressure with gauze to stop bleeding. If a tooth is loosened or displaced, see a dentist within 24 hours. If a tooth is pushed up into the gum (intruded), see a dentist promptly as this can affect the permanent tooth developing underneath. Save any tooth fragments for the dentist to examine.

Baby Has a Cut or Bleeding Wound

Minor cuts and scrapes are a normal part of childhood. For most small cuts: apply gentle pressure with a clean cloth for 5-10 minutes to stop the bleeding, clean the wound with lukewarm water, apply antibiotic ointment, and cover with a bandage. Most minor cuts heal well without stitches. A cut may need stitches (or skin glue) if it is deeper than 1/4 inch, will not stop bleeding after 10 minutes of pressure, is gaping open, is on the face, or was caused by a dirty or rusty object. If stitches are needed, they work best when placed within 6-8 hours of the injury.

Milestone

Month-by-Month Development

Detailed monthly development guides from birth through 24 months.

Guide

When to Call the Doctor

General guide on when to call the pediatrician, visit urgent care, or go to the ER.

Frequently asked questions

Is has a split or cut lip normal?
Split lips from falls are very common in babies and toddlers. The lip area bleeds heavily because of its rich blood supply, so injuries often look worse than they are. Apply firm pressure with a clean cloth for 15 minutes. Small cuts that do not cross the border between the lip skin and facial skin (the vermilion border) usually heal well on their own. Cuts that cross this border, are deep, gaping, or very long may need stitches for the best cosmetic result.
When should I call the doctor about has a split or cut lip?
Bleeding does not stop after 15-20 minutes of steady, firm pressure A large or deep laceration goes all the way through the lip, or the cut crosses the lip border and needs alignment for proper healing - seek medical care within 6-8 hours
When is has a split or cut lip normal?
Bleeding from a small lip cut stops within 15 minutes of firm pressure The lip is swollen but the cut is small and the edges come together on their own Your baby is eating and drinking normally within a few hours of the injury
What causes has a split or cut lip?
Split lips from falls are very common in babies and toddlers. The lip area bleeds heavily because of its rich blood supply, so injuries often look worse than they are. Apply firm pressure with a clean cloth for 15 minutes. Small cuts that do not cross the border between the lip skin and facial skin (the vermilion border) usually heal well on their own. Cuts that cross this border, are deep, gaping, or very long may need stitches for the best cosmetic result. Common explanations include: Bleeding from a small lip cut stops within 15 minutes of firm pressure. The lip is swollen but the cut is small and the edges come together on their own.
What should I mention to my pediatrician about has a split or cut lip?
You should mention has a split or cut lip at your next visit if: A lip cut is larger than half an inch or seems deep. The cut crosses the vermilion border (lip line) and you want to know if stitches are needed. The lip remains significantly swollen after 48 hours.
Is has a split or cut lip normal at 0-3 months?
Lip injuries are rare in young babies. If your newborn has a lip cut, apply gentle pressure and contact your pediatrician. Ensure it is from an identifiable cause. Lip bruises in young babies without a clear cause should always be evaluated.
Is has a split or cut lip normal at 3-6 months?
As babies put everything in their mouths and begin to move more, minor lip injuries can occur. A split lip from bumping against a toy or surface will bleed and swell but usually heals quickly. Apply pressure, then apply a cold compress wrapped in cloth to reduce swelling. Continue breastfeeding or bottle feeding as normal.
Should I go to the ER for has a split or cut lip?
Seek emergency care if bleeding does not stop after 15-20 minutes of steady, firm pressure, or if a large or deep laceration goes all the way through the lip, or the cut crosses the lip border and needs alignment for proper healing - seek medical care within 6-8 hours. When in doubt, call your pediatrician's after-hours line for guidance.
Does has a split or cut lip go away on its own?
In many cases, has a split or cut lip resolves on its own, especially when bleeding from a small lip cut stops within 15 minutes of firm pressure. By 2-3 years, active play leads to frequent lip bumps and cuts. Teach your child to run with their mouth closed. After a lip injury, watch for signs of infection over the next few days: increasing redness, warmth, swelling, or pus. Also check the teeth for looseness or damage after any fall that affects the mouth area.
AAPMAYO CLINICNIH

References

  1. [1]American Academy of Pediatrics. Mouth and Dental Injuries. HealthyChildren.org. AAP
  2. [2]Mayo Clinic. Cuts and scrapes: First aid. Mayo Clinic
  3. [3]National Library of Medicine. Lip Laceration Repair. StatPearls. NIH

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss My Baby Has a Split or Cut Lip.

Things to mention

  • Describe when you first noticed has a split or cut lip and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if a lip cut is larger than half an inch or seems deep.
  • Mention if the cut crosses the vermilion border (lip line) and you want to know if stitches are needed.
  • 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

  • A lip cut is larger than half an inch or seems deep
  • The cut crosses the vermilion border (lip line) and you want to know if stitches are needed
  • The lip remains significantly swollen after 48 hours

Urgent signs to report immediately

  • Bleeding does not stop after 15-20 minutes of steady, firm pressure
  • A large or deep laceration goes all the way through the lip, or the cut crosses the lip border and needs alignment for proper healing - seek medical care within 6-8 hours

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

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Bottom line

Most cases of has a split or cut lip are normal. Talk to your pediatrician if bleeding does not stop after 15-20 minutes of steady, firm pressure.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

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My Baby Bit or Cut Their Tongue

Tongue injuries are common in babies and toddlers and often look worse than they are because the tongue has an excellent blood supply. Most tongue lacerations heal well without stitches. Apply gentle pressure with a clean cloth for 15 minutes. Small cuts (less than half an inch) on the tip or surface usually heal quickly on their own. Cuts that are deep, gaping, or on the edge of the tongue may need medical evaluation for possible sutures.

My Baby's Tooth Was Knocked Out or Loosened by a Fall

If a baby tooth is knocked out, do NOT try to replant it (unlike permanent teeth). Apply gentle pressure with gauze to stop bleeding. If a tooth is loosened or displaced, see a dentist within 24 hours. If a tooth is pushed up into the gum (intruded), see a dentist promptly as this can affect the permanent tooth developing underneath. Save any tooth fragments for the dentist to examine.

Baby Has a Cut or Bleeding Wound

Minor cuts and scrapes are a normal part of childhood. For most small cuts: apply gentle pressure with a clean cloth for 5-10 minutes to stop the bleeding, clean the wound with lukewarm water, apply antibiotic ointment, and cover with a bandage. Most minor cuts heal well without stitches. A cut may need stitches (or skin glue) if it is deeper than 1/4 inch, will not stop bleeding after 10 minutes of pressure, is gaping open, is on the face, or was caused by a dirty or rusty object. If stitches are needed, they work best when placed within 6-8 hours of the injury.

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