Signs of Intussusception in Babies
Medically reviewed by Dr. Sarah Chen, MD, FAAP · Board-Certified Pediatrician
Content reviewed against published American Academy of Pediatrics, Children's Hospital of Philadelphia, Mayo Clinic guidelines
Last reviewed:
Digestive issues are common in infants and toddlers. If your baby is experiencing signs of intussusception in babies, here is what you need to know.
The short answer
Intussusception is a serious but treatable condition where part of the intestine telescopes into itself, causing a blockage. The classic signs are sudden episodes of severe pain (baby screams and pulls legs up), vomiting, and eventually "currant jelly" stools (blood and mucus). It's most common between 6-18 months and requires immediate emergency care.
Key takeaways
- Intussusception is a serious but treatable condition where part of the intestine telescopes into itself, causing a blockage. The classic signs are sudden episodes of severe pain (baby screams and pulls legs up), vomiting, and eventually "currant jelly" stools (blood and mucus). It's most common between 6-18 months and requires immediate emergency care.
- Usually normal when: Fussiness or crying that has an identifiable cause (hunger, gas, tiredness)
- Call your doctor if: Sudden, severe crying episodes that come in waves (every 10-20 minutes)
- Varies by age — see the age-by-age breakdown below
“The biggest concern with vomiting is dehydration. Young children can become dehydrated quickly, so it's important to replace fluids. Offer small amounts of an oral rehydration solution frequently.”
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What Parents Should Know
According to American Academy of Pediatrics, Children's Hospital of Philadelphia, Mayo Clinic guidelines, intussusception is a serious but treatable condition where part of the intestine telescopes into itself, causing a blockage. The classic signs are sudden episodes of severe pain (baby screams and pulls legs up), vomiting, and eventually "currant jelly" stools (blood and mucus). It's most common between 6-18 months and requires immediate emergency care. At 0-6 months, intussusception is less common in babies under 6 months but can still occur. In young babies, symptoms may be harder to recognize. Watch for unusual crying patterns, especially sudden, intense screaming episodes that come in waves. Baby may pull legs to chest, then seem normal for 10-20 minutes, then scream again. Vomiting and lethargy are common early signs. It is generally considered normal when fussiness or crying that has an identifiable cause (hunger, gas, tiredness). However, you should contact your pediatrician promptly if sudden, severe crying episodes that come in waves (every 10-20 minutes).
Normal vs. Concerning
By Age
What to expect by age
0-6 months
Intussusception is less common in babies under 6 months but can still occur. In young babies, symptoms may be harder to recognize. Watch for unusual crying patterns, especially sudden, intense screaming episodes that come in waves. Baby may pull legs to chest, then seem normal for 10-20 minutes, then scream again. Vomiting and lethargy are common early signs.
6-12 months
This is peak age for intussusception. The classic pattern is sudden, severe belly pain that comes in waves (every 15-20 minutes). During pain episodes, baby screams intensely, pulls legs up, and may vomit. Between episodes, baby may seem lethargic or even normal. "Currant jelly" stools (dark red, jelly-like, with blood and mucus) usually appear later but are a key warning sign. Some babies have a palpable "sausage-shaped" mass in the belly.
12-24 months
Intussusception remains fairly common in this age range. Symptoms are similar to younger babies but toddlers may be able to point to their belly or show you where it hurts. The pattern of pain coming and going in waves is still the hallmark. Don't wait for bloody stools - early treatment is much more effective. Any sudden, severe abdominal pain deserves immediate evaluation.
2+ years
While less common after age 2, intussusception can still occur. In older toddlers, it's sometimes triggered by a "lead point" like swollen lymph nodes from a recent illness. Symptoms include severe belly pain, vomiting, and possibly blood in stool. Older children may be able to tell you their belly hurts badly.
What to Tell Your Pediatrician
- Describe when you first noticed signs of intussusception in babies and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if you're concerned about unusual crying patterns or belly pain.
- Mention if baby has had several episodes of vomiting in a short period.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Fussiness or crying that has an identifiable cause (hunger, gas, tiredness)
- Belly pain that improves with comfort measures or passing gas
- Normal stools, even if they vary in color from feed to feed
- Baby who remains active and interested between fussy periods
- You're concerned about unusual crying patterns or belly pain
- Baby has had several episodes of vomiting in a short period
- Changes in stool appearance that worry you
- Sudden, severe crying episodes that come in waves (every 10-20 minutes)
- Baby pulls legs tightly to chest and screams inconsolably
- "Currant jelly" stools - dark red, jelly-like, containing blood and mucus
- Vomiting bile (green or yellow)
- Baby becomes pale, sweaty, or lethargic between pain episodes
- You can feel a hard, sausage-shaped lump in baby's belly
- Baby's belly is swollen and painful to touch
What You Can Do at Home
- Keep track of when you notice signs of intussusception in babies — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that fussiness or crying that has an identifiable cause (hunger, gas, tiredness) — this is generally within the range of normal.
- At 0-6 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Keep your baby upright for 20-30 minutes after feeding. Note any patterns between feeds and symptoms.
- While monitoring at home, seek immediate care if sudden, severe crying episodes that come in waves (every 10-20 minutes).
Related Resources
Vomiting Decision Tree
Evaluate vomiting severity and decide when to call the doctor.
Poop Color & Texture Guide
What your baby's poop color and consistency mean, and when to worry.
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 signs of intussusception in babies normal?
When should I call the doctor about signs of intussusception in babies?
When is signs of intussusception in babies normal?
What causes signs of intussusception in babies?
What should I mention to my pediatrician about signs of intussusception in babies?
Is signs of intussusception in babies normal at 0-6 months?
Is signs of intussusception in babies normal at 6-12 months?
Should I go to the ER for signs of intussusception in babies?
Does signs of intussusception in babies go away on its own?
References
- [1]Intussusception: Emergency Warning Signs for Parents (2024) American Academy of Pediatrics
- [2]Intussusception: Diagnosis and Treatment (2024) Children's Hospital of Philadelphia
- [3]Intussusception in Infants: When to Seek Emergency Care (2024) Mayo Clinic
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Signs of Intussusception in Babies.
Things to mention
- Describe when you first noticed signs of intussusception in babies and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if you're concerned about unusual crying patterns or belly pain.
- Mention if baby has had several episodes of vomiting in a short period.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- You're concerned about unusual crying patterns or belly pain
- Baby has had several episodes of vomiting in a short period
- Changes in stool appearance that worry you
Urgent signs to report immediately
- Sudden, severe crying episodes that come in waves (every 10-20 minutes)
- Baby pulls legs tightly to chest and screams inconsolably
- "Currant jelly" stools - dark red, jelly-like, containing blood and mucus
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 signs of intussusception in babies are normal. Talk to your pediatrician if sudden, severe crying episodes that come in waves (every 10-20 minutes).
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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