There are a number of reasons a baby may have bright red blood in the the stool (poop, poo).
- The most common cause is a hard stool (poop, poo), that occurs with constipation, causing a small tear in the baby's back passage (anus) that then bleeds. This is not a serious problem and all you need to do is manage the constipation.
- Newborn babies who are breast-feeding can have blood in the stool which is from a mother's cracked nipple. This is not a serious condition for the baby.
- An infant who is having bouts of screaming and drawing up the legs, maybe with vomiting as well, who then passes what looks like red currant jelly in the bowel motion may have intussusception and you need to see your doctor urgently.
- Infants who have a cow' milk protein allergy may have blood in the stool (poop, poo), but they will probably have other symptoms as well, such as poor growth, irritability and maybe even a skin rash.
- A baby or toddler who has blood in the stool may also have a condition called a Meckels' diverticulum. If your toddler has blood in stool (poop, poo) over a long period or is pale, see your doctor for consideration for more tests.
What causes a baby or toddler to have blood in diarrhea?
Bloody diarrhea can be caused by a bacteria. Most
gastroenteritis causing diarrhea is viral but sometimes a bacteria can be the cause and antibiotics may be needed. If your infant or toddler has blood in diarrhea, see your doctor for a stool (poop, poo) test.
What causes a baby or toddler to have black diarrhea (stool, poop, poo)?
Black stool usually contains blood that has been altered by stomach acids. Babies or toddlers who have black diarrhea or stool (also called melena) have had bleeding in the top half of the gut. This can be for reasons that are not serious, like after vomiting with
gastroenteritis when the lining of the esophagus can get little tears that bleed. This usually settles quickly within 24 hours.
Melena that persists can occasionally (but it's rare) be due to other more serious causes. See your doctor is melena persists or your child looks pale.
When should I see my doctor for blood in stool?
See your doctor if:
- you are very worried about your child
- your child looks pale or is lethargic
- your child has had crying episodes and then a red currant jelly stool
- your child had blood in diarrhea
- your child has had melena (black diarrhea / stool) which is not explained by a vomiting illness
