Infant colic refers to episodes of intense and prolonged crying in an otherwise healthy baby. These cries can be difficult to soothe and may be alarming for parents, especially during the first few weeks of life.
According to several health authorities—such as the NHS in the United Kingdom, the American Academy of Pediatrics, the Nordic health services (Sweden, Norway), and French resources like Ameli and the Haute Autorité de Santé—colic is common in infants and is generally temporary and benign.
In this guide, you will discover:
• what infant colic is
• how to recognize the signs in a baby
• how long it typically lasts
• what can help soothe the baby
• when it's important to consult a healthcare professional.
What is infant colic?
Colic refers to prolonged crying episodes in a baby less than a few months old who is otherwise healthy and developing normally.
In medical literature, an indicative rule sometimes used is called the “rule of 3s”:
• crying for more than 3 hours a day
• more than 3 days a week
• for more than 3 weeks.
However, specialists emphasize that this definition serves mainly as a guide. Not all babies fit this pattern exactly.
Colic is therefore generally described as unexplained crying in a healthy infant, rather than a precise illness with a single cause.
At what age does colic appear?
Medical observations in several countries show a fairly similar pattern:
• colic often starts between the 2nd and 4th week of life
• it can be more pronounced around 6 to 8 weeks
• it usually improves around 3 or 4 months.
These benchmarks remain indicative: some babies may have shorter or longer episodes.
Colic usually disappears spontaneously as the baby matures.
How to recognize colic in a baby?
Several signs are frequently mentioned in medical descriptions:
• intense crying that is difficult to soothe
• episodes often occurring in the late afternoon or evening
• baby pulling legs up to the belly
• clenched fists or red face
• impression of abdominal pain or gas
• baby being calm between episodes.
It is important to remember that crying is a normal means of communication for infants. Therefore, not all crying necessarily indicates colic.
What are the possible causes of colic?
The exact cause of colic is not fully known. Researchers suggest several hypotheses.
For example:
• immaturity of the digestive system
• difficulty for the baby to regulate stimulation
• swallowing air during meals
• individual sensitivity of some infants
• gradual adaptation of the nervous system.
Most specialists today agree that colic probably results from several combined factors, rather than a single cause.
How to relieve infant colic?
There is no universal solution that works for all babies. However, several simple actions can sometimes help.
Keep baby upright after feeding
Keeping the baby in a relatively upright position during and after feeding can limit swallowed air and facilitate burping.
Check position during bottle feeding
For bottle-fed babies, it is recommended to check that:
• the nipple remains full of milk
• the baby is not swallowing too much air.
Changing formula without medical advice is generally not recommended.
Rock or carry baby
Gentle movements can sometimes calm a crying baby:
• carrying baby close
• walking gently
• rocking
• using a stroller or baby carrier.
Create a calm environment
Some babies are sensitive to stimulation. A calmer environment, with less noise or light, can sometimes help.
Are anti-colic medicines or products effective?
In several international medical recommendations, products sold for colic (drops, herbs, probiotics) should be used with caution.
Some studies have examined various solutions, but the results remain variable depending on the products and situations.
Therefore, many health organizations recommend seeking advice from a healthcare professional before using a specific product for colic.
Is baby's crying always colic?
No.
An infant can cry for many reasons:
• hunger
• fatigue
• wet diaper
• need for reassurance
• digestive reflux
• discomfort.
This is why healthcare professionals always assess the baby's general condition before concluding that it is colic.
When to consult a healthcare professional?
Even if colic is generally benign, it is important to consult if:
• crying is unusual or very sudden
• the baby refuses to eat
• they seem very drowsy or difficult to wake
• they have a fever
• they vomit frequently
• parents are very worried.
A doctor, pediatrician, or midwife can check that everything is fine.
Colic can be difficult for parents
Prolonged crying from a baby can be very exhausting, especially with fatigue.
Health authorities emphasize an essential point: if the crying becomes difficult to bear, it is important to ask for help from a loved one or a professional.
You must never shake a baby, as this can cause serious injuries.
If you feel overwhelmed, safely place your baby in their crib and take a few minutes to calm down before returning.
FAQ – Infant Colic
Is colic common?
Yes. It is estimated that approximately one in five infants experiences episodes of colic.
Is colic dangerous?
In the vast majority of cases, no. It is alarming but temporary.
Does colic disappear on its own?
Yes, most of the time it improves spontaneously around 3 to 4 months.
Should I change formula if my baby has colic?
Not necessarily. It is best to seek advice from a healthcare professional before changing the baby's diet.
Medical Sources
The information presented in this article is based on the recommendations and publications of several recognized health organizations:
• World Health Organization (WHO)
• Haute Autorité de Santé (France)
• Ameli – Assurance Maladie
• NHS (United Kingdom)
• American Academy of Pediatrics
• Nordic health services (Sweden, Norway)
• scientific publications indexed on PubMed.
Important note
The information presented in this article is for informational purposes only and does not replace the advice of a healthcare professional.
Recommendations may vary slightly depending on the country and health authorities.
If you have any doubts about your baby's health, it is recommended to consult a doctor, pediatrician, or midwife.
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