When Should I Take My Baby to the Emergency Room?
The short answer
Trust your instincts — if your baby seems seriously ill and you are worried, seeking emergency care is always the right decision. Specific reasons to go to the ER include: fever of 100.4 F or higher in a baby under 3 months, difficulty breathing, blue or gray skin color, inconsolable crying for hours, seizures, signs of dehydration, significant head injury, or lethargy where your baby is difficult to wake. It is always better to be seen and reassured than to wait too long.
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By Age
What to expect by age
0-3 months
Newborns and young infants are the most vulnerable, and the threshold for emergency care should be very low. Go to the ER for: any fever of 100.4 F (38 C) or higher (this is a true emergency in this age group and requires blood work and possible admission), difficulty breathing (fast breathing, grunting, nasal flaring, rib retractions), blue or gray skin color, vomiting green/bile-colored fluid, blood in stool, seizures, extreme lethargy or difficulty waking, fewer than 3 wet diapers in 24 hours, or a bulging fontanelle. If something feels wrong, go.
3-12 months
While babies this age can handle illness better than newborns, ER visits are warranted for: fever over 104 F, fever lasting more than 3 days, signs of dehydration (fewer than 4 wet diapers in 24 hours, dry mouth, no tears, sunken fontanelle), difficulty breathing, persistent vomiting (cannot keep down any fluids for 8+ hours), blood in stool or vomit, seizures, significant head trauma, ingestion of a toxic substance or medication, and any severe allergic reaction. For less urgent concerns, call your pediatrician's after-hours line first — they can advise whether ER evaluation is needed.
12-36 months
Toddlers are more mobile and at higher risk for injuries. Go to the ER for: suspected broken bones, deep cuts that may need stitches, head injuries with loss of consciousness or vomiting, poisoning or ingestion of medications (call Poison Control first at 1-800-222-1222), severe allergic reactions (anaphylaxis), breathing difficulties, high fever with stiff neck or rash that does not blanch with pressure (petechiae), seizures, severe burns, or any injury from a significant fall. When in doubt, call your pediatrician's nurse line for guidance.
What Should You Do?
When to take action
- Your baby has a mild cold with runny nose, mild cough, and low-grade fever — this can usually be managed at home with guidance from your pediatrician
- Your baby had a minor bump or bruise from a short fall onto a soft surface and is acting normally afterward
- Your baby has a rash without fever or other concerning symptoms — this can usually wait for a regular appointment
- Your baby has symptoms that concern you but do not seem to be emergencies — call your pediatrician's office or after-hours line
- Your baby has been sick for several days and is not improving
- You are unsure whether your baby's symptoms warrant an ER visit — calling your pediatrician first is always appropriate
- Your baby is under 3 months with a fever of 100.4 F (38 C) or higher — go to the ER immediately
- Your baby has difficulty breathing: fast breathing, grunting, nasal flaring, chest retractions, or blue/gray skin — call 911
- Your baby has had a seizure, is unconscious, is extremely lethargic and difficult to wake, or has been exposed to a toxin — call 911 or go to the ER immediately
Sources
Related Resources
Trust your instincts. If something feels wrong, reach out to your pediatrician.
Worrying about your baby means you care. That is a good thing.
Related Medical Concerns
My Baby Has a Fever That Won't Go Away
Most fevers in babies and toddlers are caused by viral infections and resolve within 3-5 days. A fever that lasts longer than 3 days, returns after seeming to resolve, or is accompanied by worsening symptoms warrants medical evaluation. The most important thing is how your baby looks and acts - a child who is alert and drinking well with a fever is generally less concerning than one who is listless, regardless of the temperature.
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 Is Breathing Fast
Babies normally breathe faster than adults. A normal respiratory rate for a newborn is 30-60 breaths per minute, slowing to 20-40 by age 1. Brief episodes of faster breathing during excitement, crying, or feeding are normal. However, persistently rapid breathing (tachypnea) at rest, especially with other signs of respiratory distress, may indicate a lung or heart problem that needs prompt evaluation.
My Baby Turns Blue (Cyanosis)
Blue or purple discoloration limited to a baby's hands and feet (acrocyanosis) is very common in newborns and usually harmless, caused by immature circulation. However, blue coloring of the lips, tongue, face, or trunk (central cyanosis) is always a medical emergency that requires immediate evaluation, as it may indicate a heart or lung problem.
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.