Skip to content

Why does my baby strain when pooing?

Read the UK edition

The short answer

A young baby may strain, turn red, grunt, or draw up their legs before pooing; if the stool is soft, this is often not constipation. Babies are still learning to coordinate abdominal pressure with relaxing the pelvic floor, and this usually improves with time. Hard, dry stool, blood, a swollen tummy, or vomiting needs a different assessment.

In this guide · 10 sections

Keep in mind

  • The texture of the stool matters more than how dramatic the straining looks.
  • Straining and crying before soft stool can be a temporary coordination phase called infant dyschezia.
  • Do not routinely use a thermometer, cotton bud, suppository, or other rectal stimulation.

Why can a baby struggle to pass soft poop?

Adults increase abdominal pressure while relaxing the pelvic floor. Young babies have not yet learned to coordinate these actions well; they also spend much of their time lying on their backs and have less help from gravity, so even soft stool can take effort.

A red face, grunting, drawing up the legs, and brief crying can happen. If soft stool comes out and the baby seems well between episodes, this behavior alone does not point to bowel disease.

How is infant dyschezia different from constipation?

With infant dyschezia, an otherwise well young baby may strain and cry for a while before passing soft stool. The difficulty is learning to coordinate the muscles used for a bowel movement, not hard stool; it usually improves on its own.

With constipation, stool is hard, dry, pellet-like, or painful to pass. Straining time or a red face alone cannot distinguish them; note the stool’s texture and how your baby is otherwise doing.

How long is it normal to strain?

There is no number of minutes that applies to every baby. Some strain intermittently for several minutes, sometimes longer, before pooing. What comes out and how the baby is between episodes matter more than timing alone.

If straining is getting worse, no stool or gas is passing, stool becomes hard, or feeding and general wellbeing change, do not assume it is just a developmental phase.

How can you comfort your baby safely?

If your baby is awake and comfortable, you can gently move their legs as if pedalling a bicycle, lightly touch their tummy, or try a warm bath to help them settle. Keep movements gentle; the goal is comfort, not mechanically making poop come out.

Continue feeding as usual. Changing formula, broadly eliminating foods from a breastfeeding parent’s diet, or starting gas drops solely because of straining may not address the actual cause.

Why avoid rectal stimulation or suppositories?

Routinely stimulating the anus with a thermometer, cotton bud, or other object can irritate or injure the area and cause bleeding. It is an unnecessary intervention while a baby is learning to coordinate bowel movements.

Use a suppository, laxative, or other medicine only if a health professional recommends it. Trying to soften stool is not aimed at the cause when the stool is already soft.

Which signs are different from ordinary straining?

Hard, dry stool, blood in the stool, significant difficulty passing stool from birth, feeding changes, or concerns about weight need assessment. Even if you see blood on the surface, do not assume at home that it is only a small fissure.

A markedly swollen or firm tummy, green vomit, repeated vomiting, inability to pass stool or gas, or unusual lethargy does not fit ordinary straining and needs prompt assessment.

What can you do at the next bowel movement?

Note whether the poop is soft or hard before focusing on how long your baby strains.

Notice whether your baby is comfortable, feeding, and alert between episodes, and whether there is tummy swelling or vomiting.

If the stool is soft, comfort gently and observe; if it is hard or there are warning signs, seek advice without trying rectal interventions.

When to seek support

Some signs need emergency help; other concerns can be discussed with your child’s healthcare team.

  • Hard, dry, painful stool, blood in the stool, or straining that is worsening or prolonged.
  • Marked abdominal swelling, green or repeated vomiting, or inability to pass stool or gas.
  • Significant bowel difficulty since birth, feeding refusal, concern about growth, or unusual lethargy.

Sources used for this guide

  1. American Academy of Pediatrics / HealthyChildren.org — How Can I Tell If My Baby Is Constipated?
  2. American Academy of Pediatrics / HealthyChildren.org — Pooping By the Numbers: What's Normal for Infants?
  3. American Academy of Pediatrics / HealthyChildren.org — Constipation – Symptom Checker
  4. www.healthychildren.org — regional guidance

English editorial review:

The English text and regional guidance have been checked editorially. This is not an individual clinical assessment.

Luluna provides general parenting information. It does not diagnose conditions or replace your child’s healthcare professional.

Explore more guides