Baby Hit Their Head - When to Worry
Medically reviewed by Dr. Michael Okonkwo, MD, FAAP · Board-Certified Neonatologist
Content reviewed against published AAP, NIH, CDC guidelines
Last reviewed:
If your baby has been diagnosed with or you suspect baby hit their head - when to worry, here is what the evidence says.
The short answer
Head bumps are extremely common in babies and toddlers. The vast majority do not cause serious injury. The PECARN guidelines, used by emergency physicians, help identify which children need imaging after head trauma. The most important things to watch for are loss of consciousness, repeated vomiting, abnormal behavior, and a worsening headache. A "goose egg" bump, brief crying, and mild fussiness are normal responses to a head bump and do not indicate brain injury.
Key takeaways
- Head bumps are extremely common in babies and toddlers. The vast majority do not cause serious injury. The PECARN guidelines, used by emergency physicians, help identify which children need imaging after head trauma. The most important things to watch for are loss of consciousness, repeated vomiting, abnormal behavior, and a worsening headache. A "goose egg" bump, brief crying, and mild fussiness are normal responses to a head bump and do not indicate brain injury.
- Usually normal when: Your baby cried immediately after the bump but calmed down within minutes
- Call your doctor if: Your baby lost consciousness even briefly, had a seizure, or is difficult to rouse from sleep
- Varies by age — see the age-by-age breakdown below
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What Parents Should Know
According to AAP, NIH, CDC guidelines, head bumps are extremely common in babies and toddlers. The vast majority do not cause serious injury. The PECARN guidelines, used by emergency physicians, help identify which children need imaging after head trauma. The most important things to watch for are loss of consciousness, repeated vomiting, abnormal behavior, and a worsening headache. A "goose egg" bump, brief crying, and mild fussiness are normal responses to a head bump and do not indicate brain injury. At 0-3 months, any head injury in a baby under 3 months should be evaluated by a doctor. Young infants have soft, thin skulls and are more vulnerable to injury. They also cannot communicate symptoms like headache or dizziness. If your young infant bumps their head, call your pediatrician even if the baby seems fine. Watch for excessive sleepiness, refusal to feed, a bulging fontanelle (soft spot), or any change in normal behavior. The threshold for medical evaluation is lower in this age group. It is generally considered normal when your baby cried immediately after the bump but calmed down within minutes. However, you should contact your pediatrician promptly if your baby lost consciousness even briefly, had a seizure, or is difficult to rouse from sleep.
Normal vs. Concerning
When to Seek Immediate Care
- Your baby lost consciousness even briefly, had a seizure, or is difficult to rouse from sleep
- Your baby is vomiting repeatedly (more than once), has unequal pupils, has clear or bloody fluid from the nose or ears, or has a bulging soft spot
- Your baby or toddler is acting very differently than normal - extremely irritable, unusually lethargic, not recognizing familiar people, or showing changes in coordination or balance
By Age
What to expect by age
0-3 months
Any head injury in a baby under 3 months should be evaluated by a doctor. Young infants have soft, thin skulls and are more vulnerable to injury. They also cannot communicate symptoms like headache or dizziness. If your young infant bumps their head, call your pediatrician even if the baby seems fine. Watch for excessive sleepiness, refusal to feed, a bulging fontanelle (soft spot), or any change in normal behavior. The threshold for medical evaluation is lower in this age group.
3-6 months
As babies become more mobile, head bumps become more common. After a bump, check whether your baby is alert and responding normally. A brief cry followed by normal behavior is reassuring. Apply a cold compress to any swelling for 15-20 minutes. A goose egg is caused by bleeding under the scalp and looks alarming but is not dangerous in itself. Monitor for 24 hours for warning signs: repeated vomiting, unusual sleepiness, unequal pupils, or behavior changes.
6-12 months
Crawling and pulling-up babies bump their heads frequently. Most bumps at this age involve toppling over while sitting, hitting furniture while crawling, or falling while pulling to stand. These low-impact bumps rarely cause serious injury. The concern increases with the force of the impact and the surface struck. A baby who bumps their head on a padded carpet is at much lower risk than one who falls onto tile or hits a sharp corner. After any significant bump, the observation period is 24 hours.
12-36 months
Toddlers are unsteady walkers who fall often, and head bumps are a near-daily occurrence for many. Most of these minor bumps need only comfort and possibly a cold compress. Toddlers can begin to tell you their head hurts, which is helpful. Warning signs at this age include: a headache that gets worse over time, vomiting more than once, difficulty walking or unusual clumsiness (beyond their baseline), confusion, slurred speech, or extreme drowsiness. If your toddler took a hard fall and then seems "off" in a way you cannot quite define, trust your instincts and seek evaluation.
What to Tell Your Pediatrician
- Describe when you first noticed baby hit their head - when to worry and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if the bump involved a fall from more than 3 feet or onto a hard surface.
- Mention if your baby had one episode of vomiting shortly after the bump but seems fine otherwise.
- 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
- Your baby cried immediately after the bump but calmed down within minutes
- There is a goose egg or small bruise at the point of impact but no other symptoms
- Your baby is acting completely normally - alert, eating, playing, and sleeping as usual
- Your toddler can tell you their head hurts briefly but then goes back to normal activities
- The bump happened on a soft surface or from a low height
- The bump involved a fall from more than 3 feet or onto a hard surface
- Your baby had one episode of vomiting shortly after the bump but seems fine otherwise
- There is significant swelling or a large goose egg
- Your baby is under 6 months old and had any notable head bump
- Your baby lost consciousness even briefly, had a seizure, or is difficult to rouse from sleep
- Your baby is vomiting repeatedly (more than once), has unequal pupils, has clear or bloody fluid from the nose or ears, or has a bulging soft spot
- Your baby or toddler is acting very differently than normal - extremely irritable, unusually lethargic, not recognizing familiar people, or showing changes in coordination or balance
What You Can Do at Home
- Keep track of when you notice baby hit their head - when to worry — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that your baby cried immediately after the bump but calmed down within minutes — 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 your baby lost consciousness even briefly, had a seizure, or is difficult to rouse from sleep.
Related Conditions
Baby Fell Off the Bed or Couch
Falls from beds, couches, and changing tables are one of the most common accidents in infancy. Most falls from furniture height (2-3 feet) do not cause serious injury, but every fall involving the head deserves careful monitoring. If your baby cried immediately after the fall and is now acting normally - alert, feeding, and moving all limbs - serious injury is unlikely. However, certain warning signs require immediate medical evaluation.
My Baby Is Vomiting Green or Yellow (Bile)
Bilious (green or bright yellow) vomiting in a baby is a medical emergency until proven otherwise. While older children and adults occasionally vomit bile with prolonged vomiting, in infants, green vomiting can be a sign of a bowel obstruction such as malrotation with volvulus, which requires emergency surgery. If your baby vomits green or bright yellow fluid, seek immediate medical attention.
My Baby Had a Febrile Seizure
Febrile seizures are frightening to witness but are usually harmless. They affect about 1 in 25 children, typically between 6 months and 5 years, and almost never cause lasting harm. Most children who have one febrile seizure never have another, and they don't increase the risk of epilepsy significantly.
Related Resources
Milestone Checklists by Age
Track your baby's developmental milestones from birth to 5 years with age-specific checklists.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
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 baby hit their head - when to worry normal?
When should I call the doctor about baby hit their head - when to worry?
When is baby hit their head - when to worry normal?
What causes baby hit their head - when to worry?
What should I mention to my pediatrician about baby hit their head - when to worry?
Is baby hit their head - when to worry normal at 0-3 months?
Is baby hit their head - when to worry normal at 3-6 months?
Should I go to the ER for baby hit their head - when to worry?
Does baby hit their head - when to worry go away on its own?
References
- [1]American Academy of Pediatrics. Head Injury in Children. HealthyChildren.org. AAP
- [2]Kuppermann N, et al. PECARN Rule for Identifying Children at Very Low Risk of Clinically Important Brain Injuries. Lancet. 2009. NIH
- [3]Centers for Disease Control and Prevention. Traumatic Brain Injury and Concussion: Signs and Symptoms. CDC
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Baby Hit Their Head - When to Worry.
Things to mention
- Describe when you first noticed baby hit their head - when to worry and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if the bump involved a fall from more than 3 feet or onto a hard surface.
- Mention if your baby had one episode of vomiting shortly after the bump but seems fine otherwise.
- 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
- The bump involved a fall from more than 3 feet or onto a hard surface
- Your baby had one episode of vomiting shortly after the bump but seems fine otherwise
- There is significant swelling or a large goose egg
Urgent signs to report immediately
- Your baby lost consciousness even briefly, had a seizure, or is difficult to rouse from sleep
- Your baby is vomiting repeatedly (more than once), has unequal pupils, has clear or bloody fluid from the nose or ears, or has a bulging soft spot
- Your baby or toddler is acting very differently than normal - extremely irritable, unusually lethargic, not recognizing familiar people, or showing changes in coordination or balance
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
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Related Resources
Bottom line
Most cases of baby hit their head - when to worry are normal. Talk to your pediatrician if your baby lost consciousness even briefly, had a seizure, or is difficult to rouse from sleep.
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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Related Medical Concerns
Baby Fell Off the Bed or Couch
Falls from beds, couches, and changing tables are one of the most common accidents in infancy. Most falls from furniture height (2-3 feet) do not cause serious injury, but every fall involving the head deserves careful monitoring. If your baby cried immediately after the fall and is now acting normally - alert, feeding, and moving all limbs - serious injury is unlikely. However, certain warning signs require immediate medical evaluation.
My Baby Is Vomiting Green or Yellow (Bile)
Bilious (green or bright yellow) vomiting in a baby is a medical emergency until proven otherwise. While older children and adults occasionally vomit bile with prolonged vomiting, in infants, green vomiting can be a sign of a bowel obstruction such as malrotation with volvulus, which requires emergency surgery. If your baby vomits green or bright yellow fluid, seek immediate medical attention.
My Baby Had a Febrile Seizure
Febrile seizures are frightening to witness but are usually harmless. They affect about 1 in 25 children, typically between 6 months and 5 years, and almost never cause lasting harm. Most children who have one febrile seizure never have another, and they don't increase the risk of epilepsy significantly.
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.