Baby constipation and colic can both cause crying, fussiness, and apparent tummy discomfort, but they have different patterns. Constipation mainly affects bowel movements, often causing hard, dry stools that are difficult to pass. Colic causes repeated, prolonged crying in an otherwise healthy baby, even when the baby has been fed and changed. Looking at stool consistency, crying patterns, feeding, and your baby's overall health can help guide the next steps.
What Is the Main Difference Between Constipation and Colic?
The most useful distinction is whether your baby's discomfort is closely related to passing stool or occurs in repeated crying episodes throughout the day. Constipation involves difficulty passing stools or stools that are unusually hard. Colic involves prolonged periods of crying that are difficult to soothe, without an obvious cause.
These conditions can sometimes appear similar, and a baby with either problem may pull their knees toward their tummy, clench their fists, turn red in the face, or seem restless. These behaviors alone cannot distinguish one condition from the other.
The American Academy of Pediatrics (HealthyChildren.org) explains that infant colic and constipation are among several possible reasons for abdominal discomfort in babies. A healthcare professional considers the baby's age, feeding, bowel movements, crying pattern, and other symptoms when evaluating the problem.
How Can You Recognize Baby Constipation?
Constipation is more likely to be a concern when your baby's stool becomes hard, dry, or difficult to pass. The number of bowel movements matters, but it is not the only factor. Some healthy babies, especially those who are exclusively breastfed and older than a month, may go several days between bowel movements without being constipated.
Examples of signs that may occur with constipation include:
- Hard, dry, pellet-like, or unusually firm stools.
- Crying or appearing uncomfortable while passing stool.
- Repeated straining without successfully passing stool.
- A noticeable change in bowel movement frequency along with harder stools or difficulty passing them.
- A firm or swollen tummy, reduced appetite, or increased fussiness.
- Small streaks of bright red blood on the stool, which may occur when hard stool irritates the skin around the anus.
Not every baby with constipation will have all these signs. Grunting, straining, and turning red while passing a soft stool can be normal in young infants who are still learning to coordinate the muscles needed for a bowel movement.
According to Mayo Clinic, painful bowel movements and hard stools are important signs of constipation, while the frequency of bowel movements varies among babies. A change in frequency alone does not necessarily mean a baby is constipated.
What Does Colic Look Like in Babies?
Colic describes repeated episodes of intense crying or fussiness in an otherwise healthy infant. The crying may seem disproportionate to the baby's needs and can be difficult to stop, even after feeding, changing a diaper, or offering comfort.
Colic commonly begins during the first few weeks of life, often becomes more noticeable in the late afternoon or evening, and usually improves by around three to four months of age.
Behaviors that may occur during colic episodes include:
- Long periods of crying that are difficult to soothe.
- Clenched fists, a flushed face, or a tense body during crying.
- Pulling the knees toward the tummy or arching the back.
- Fussiness that occurs at similar times on different days.
- Apparent discomfort despite having been fed, changed, and comforted.
- Periods between crying episodes when the baby appears comfortable and behaves normally.
These behaviors are examples, not a checklist for diagnosing colic. Babies cry for many reasons, including hunger, tiredness, overstimulation, illness, and discomfort during feeding or bowel movements.
The NHS describes colic as prolonged, difficult-to-soothe crying that may occur for several hours a day on multiple days of the week. It usually starts when babies are a few weeks old and improves by around three or four months.
Baby Constipation vs Colic: Comparing the Symptoms
The following comparison highlights common differences between the two conditions. Individual babies may show overlapping symptoms, so the overall pattern matters more than any single behavior.
| Feature | Constipation | Colic |
|---|---|---|
| Main concern | Hard or difficult-to-pass stools | Repeated, prolonged crying |
| Bowel movements | Stools may be hard, dry, or less frequent than usual | Stool patterns may remain normal |
| Crying pattern | May occur during attempts to pass stool | Often occurs in recurring episodes, sometimes at similar times of day |
| Body movements | Straining or discomfort while passing stool may occur | Clenched fists, drawn-up knees, or a tense body may occur during crying |
| Comfort between episodes | Depends on the degree and persistence of discomfort | The baby often appears comfortable between crying episodes |
| Typical course | Depends on the cause and whether constipation resolves | Usually improves by three to four months of age |
Can a Baby Have Both Constipation and Colic?
Yes, a baby can experience constipation and prolonged crying at the same time. However, crying does not automatically mean that constipation is causing the discomfort, and a baby with colic may also have normal bowel movements.
For example, a baby who cries during repeated attempts to pass hard stools may be experiencing discomfort related to constipation. A baby who has soft stools but develops prolonged crying episodes at a similar time each evening may have a different reason for being unsettled. Neither pattern confirms a diagnosis on its own.
Other conditions, including feeding difficulties, reflux, and illness, can also cause crying or apparent abdominal discomfort. If your baby's symptoms are persistent, worsening, or difficult to interpret, a pediatrician can assess the pattern and determine whether further evaluation is needed.
What Can Parents Do to Help?
If constipation may be contributing to discomfort
Continue offering breast milk or correctly prepared infant formula as appropriate for your baby's age and feeding plan. If your baby has started solid foods, a healthcare professional may recommend age-appropriate foods containing fiber, such as pears or prunes. The right approach depends on your baby's age, feeding method, and symptoms.
Do not give a young infant extra water, fruit juice, laxatives, suppositories, or enemas without appropriate medical guidance. Never dilute formula beyond the manufacturer's instructions. If your baby repeatedly struggles to pass stool, has hard stools, or develops blood in the stool, contact a healthcare professional.
If colic may be contributing to crying
Try checking basic needs first, including hunger, a wet or dirty diaper, tiredness, and temperature. Holding your baby, gently rocking them, or using a quiet environment may help them settle. Some babies respond to gentle movement or soft background noise, although no method works for every infant.
If you feel overwhelmed by prolonged crying, place your baby on their back in a safe, empty cot and take a short break nearby. Ask another trusted adult for support when possible. Never shake a baby.
Do not assume that persistent crying is colic without considering other causes, particularly if your baby seems unwell, is feeding poorly, or behaves differently from usual.
When Should You Seek Medical Attention?
Contact your baby's healthcare professional if constipation persists, bowel movements become painful, symptoms worsen, or your baby has difficulty feeding or gaining weight. Newborns and young infants need particular attention because changes in stool frequency can sometimes reflect feeding difficulties rather than constipation alone.
Seek urgent medical assessment if your baby has any of the following warning signs:
- A swollen or distended abdomen, particularly with vomiting.
- Green vomit, repeated vomiting, or an inability to keep feeds down.
- Fever in a baby younger than three months, especially a temperature of 38°C (100.4°F) or higher.
- Blood in the stool that is not clearly explained by a minor surface irritation.
- Unusual sleepiness, difficulty waking, poor feeding, or signs of dehydration.
- Sudden, persistent, or unusually intense crying, especially when accompanied by other signs of illness.
Call emergency services if your baby has difficulty breathing, becomes unresponsive, or appears seriously unwell. Do not wait for the symptoms to match a particular condition before seeking help.
A healthcare professional may ask when the crying began, how long episodes last, what the stools look like, how often the baby feeds, and whether there have been changes in wet diapers or behavior. These details help distinguish common infant fussiness from constipation, colic, and other problems that may require treatment.