Colic is a pattern of intense, inconsolable crying in an otherwise healthy baby that follows the Rule of 3s: crying for at least 3 hours a day, at least 3 days a week, for at least 3 weeks. It affects up to 1 in 4 babies. It typically starts around 2 weeks of age, peaks at 6 weeks, and resolves on its own by 3 to 4 months. The cause is not fully understood. The most effective soothing methods recreate the sensory environment of the womb: containment, motion, sound, warmth, and rhythm.
First, we see you
If you are reading this at 9pm with a screaming baby who has been crying for 40 minutes and nothing you try is working, this post is for you.
Colic is one of the hardest experiences of new parenthood. Not just because it is exhausting, but because the crying feels personal in a way ordinary newborn crying does not. You are doing everything right and it is not working. Your baby seems to be in real distress and you cannot help. Other parents post gentle-looking babies on Instagram while yours has been in the same 45 minute cry cycle every single evening for the last month.
You are not doing it wrong. Colic is not caused by anything you did. It is not a reflection of your parenting, your feeding, your calmness, or your love for your baby. It is a pattern that a large fraction of otherwise healthy babies go through, and it ends. It ends every time. Usually by 4 months. Sometimes earlier.
This guide walks through what colic actually is, what genuinely helps, what does not, and how to get through the season without breaking. It is written for the parent who has already tried everything and is looking for one more thing to try.
What colic actually is
Colic is a clinical description of a specific crying pattern in babies. It is not a disease or a diagnosis. It is a set of behaviours.
The most widely used definition is the Rule of 3s (sometimes called the 333 rule):
- Crying for at least 3 hours per day
- At least 3 days per week
- For at least 3 weeks
In an otherwise healthy, well-fed, growing baby.
The crying is typically inconsolable. Standard soothing methods that work for ordinary fussiness (feeding, cuddling, rocking) do not reliably stop it. The baby often looks physically distressed: clenched fists, drawn-up legs, red face, arching back, high-pitched screaming. Then, often just as suddenly as it started, the crying stops and the baby is fine.
The most common time for colic episodes is the late afternoon and evening. This is where the term "witching hour" comes from. Roughly two-thirds of colicky babies cry hardest between 5pm and midnight.
How to tell colic from other kinds of crying
All babies cry. Not all babies have colic. The difference is in the pattern.
Ordinary newborn crying peaks around 6 to 8 weeks and can total 2 to 3 hours per day at that peak. It usually has an identifiable trigger (hunger, tiredness, needing a change, wanting to be held) and responds to soothing.
Fussiness is a lower intensity version of crying that responds partially to soothing. Our guide on how to calm a fussy baby covers the broader picture on general fussiness.
Colic is more intense than ordinary crying, longer, harder to stop, and clusters in specific windows (usually evening). The baby seems in pain or distress rather than just uncomfortable.
Reflux or silent reflux can look like colic but is tied to feeds and body position. If your baby's fussiness clusters during and immediately after feeds, or gets worse when they are laid flat, reflux may be part of the picture. Silent reflux specifically is one of the most common conditions misdiagnosed as colic.
Cow's milk protein allergy can mimic colic. If crying comes with skin rashes, blood in the stool, persistent congestion, or feeding refusal, an allergy is worth ruling out with your pediatrician.
Something more serious. Rarely, prolonged crying can indicate an underlying medical issue. If the crying is accompanied by fever, vomiting, refusal to feed, blood in stool, or unusual lethargy, seek medical attention immediately.
The general rule: if your baby is otherwise healthy, gaining weight, feeding normally, and the crying is intense and follows the Rule of 3s pattern, colic is a reasonable working label. If any of those conditions are not met, it is worth a same-week conversation with your pediatrician.
When colic starts and stops
The colic timeline is remarkably consistent across babies. Understanding it helps you know where you are in the season.
Onset: Usually 2 to 3 weeks of age. Rarely before 1 week or after 6 weeks.
Peak: Around 6 to 8 weeks. This is the hardest stretch for most parents.
Improvement: Starts to reduce around 8 to 10 weeks. Not all at once, but noticeably.
Resolution: Most colic is fully gone by 12 to 16 weeks (3 to 4 months).
If your baby's colic-like crying starts before 2 weeks, gets significantly worse after 8 weeks, or is still happening past 4 months, mention it to your pediatrician. Persistent late crying is worth investigating for other causes.
The reason colic resolves at 3 to 4 months is likely tied to nervous system maturation. Babies at this age develop better ability to self-regulate their state, block out overstimulation, and settle themselves. Whatever the underlying driver of colic is, the baby's own biology grows out of it.
What causes colic (the honest answer)
Nobody knows for certain. Colic is idiopathic, which is medical language for "we do not fully understand the cause." Several theories exist and most are probably partially right.
Immature digestive system. Some babies have digestive discomfort as their gut matures. Gas, trapped air, and the general work of digesting milk can be uncomfortable. This is one of the older theories and is why gas drops and probiotics are often marketed for colic. The evidence for these interventions is mixed.
Immature nervous system. Newer research suggests colicky babies may have a nervous system that is slightly slower to develop the ability to self-regulate. They cannot filter out sensory input as effectively, so by the end of the day, they are overstimulated and cannot recover. This is one of the more compelling recent theories.
The fourth trimester. The idea, popularised by pediatrician Harvey Karp, that human babies are born neurologically premature compared to other mammals. They spend the first 3 months trying to adapt to life outside the womb. Colic is essentially the visible sign of that difficult adaptation. This theory is why the most effective soothing methods (5 S's, covered below) all recreate the sensory environment of the womb.
Reflux or feeding sensitivity. A minority of colicky babies actually have reflux, silent reflux, or cow's milk protein sensitivity being labelled as colic. Ruling these out with your pediatrician is worth doing.
Sensory overwhelm. The build-up of daily stimulation is more than a baby's system can process, especially in the evening. This explains the witching hour pattern.
The practical implication is that colic is probably several things happening at once, with the mix varying baby to baby. There is no single fix because there is no single cause. What works is a set of interventions that address multiple possible drivers at the same time.
The signs of colic (checklist)
Beyond the Rule of 3s, colic has some characteristic features.
- Intense, high-pitched crying that sounds different from ordinary crying
- Crying that starts suddenly, often at the same time of day
- Clenched fists during episodes
- Drawn-up or stiffened legs
- Arched back
- Red or flushed face
- Difficulty being consoled by any standard soothing method
- Passing gas or bowel movements before or during episodes
- Crying that ends as suddenly as it started
- Otherwise healthy: gaining weight, feeding normally, alert during non-crying times
If your baby fits several of these and is between 2 weeks and 4 months old, colic is likely part of the picture.
How to soothe a colicky baby
There is no magic fix. There is a well-tested set of techniques that reduces the intensity and duration of colic episodes for most babies. Working through these systematically usually finds the combination that helps yours.
The common thread across all effective techniques is that they recreate the sensory environment of the womb: containment, motion, sound, warmth, and rhythm. Colicky babies respond to intense, consistent sensory input in ways they do not respond to gentle input.
Swaddle
Firm swaddling contains the arms and legs, reduces the startle reflex, and creates the "held" feeling of the womb. This is the first of the widely-used 5 S's method (covered below) and one of the single most effective interventions.
Our step by step guide to swaddling a newborn covers the technique and safety rules. If you want a purpose-built swaddle that avoids the folding, our LullaWrap™ is designed for the parent trying to swaddle a screaming baby at 8pm.
Motion and rhythm
Rocking, bouncing, walking, or driving in the car are all forms of rhythmic motion that soothe most colicky babies. The specific mechanism is thought to be the vestibular input (movement information from the inner ear) that mimics what the baby felt in the womb.
Steady, predictable rhythm works better than variable motion. Fast rocking works better than slow rocking during an active crying episode (then slow down as the baby calms). Walking laps of the living room often works. Pacing on the spot works.
The problem with hand-rocking for hours is that your arms give out. Our LullaBear™ was designed for exactly this. It provides steady, rhythmic patting that continues indefinitely and does not tire. For a colicky baby who needs the rhythm to break through the crying cycle, this is one of the highest-leverage tools you can add.
Continuous white noise (or loud shushing)
This is one of the best-evidenced colic interventions. A landmark study found that 80 percent of newborns fell asleep within 5 minutes of continuous white noise. The mechanism is that white noise masks other sounds and mimics the constant low-frequency rumble of the womb (which was measured at around 80 decibels in utero).
For an actively screaming baby, you often need to start with louder white noise (to break through the crying) then reduce to a normal sleep-level volume once they settle.
Our LullaHush™ portable white noise machine is designed for exactly this. Continuous pink and brown noise (the most womb-like versions), a wide volume range from settling-level to break-through-crying-level, and no forced timer cut-offs. Our full guide to the best white noise for babies covers the different types of sound and how to use them.
Sucking
Sucking is deeply calming to newborns, even when they are not hungry. A pacifier during a crying episode often helps break the cycle. Non-nutritive sucking releases calming hormones and slows the heart rate.
If you are breastfeeding and worried about nipple confusion, most current guidance says pacifiers can be safely introduced after breastfeeding is established (usually around 3 to 4 weeks). Talk to your pediatrician or lactation consultant if you are unsure.
Skin to skin and warmth
Direct skin-to-skin contact regulates a baby's heart rate, temperature, and cortisol levels. For colicky babies specifically, being held against a bare chest often helps break the crying cycle in ways that clothed cuddling does not.
A warm bath is another version of the same principle. Warmth is regulating. Many colicky babies who cannot be soothed by anything else can be soothed by a warm bath, then a warm swaddle, then a warm environment.
The upright post-feed window
Many colicky babies also have some degree of reflux or gas contributing to their discomfort. Keeping your baby upright for at least 30 minutes after every feed reduces the reflux and gas discomfort that may be feeding into the colic cycle.
This is one of the primary use cases our CradlePod™ was designed for. It is a daytime post-feed comfort tool that supports a baby in a gently upright position during the critical 30 minute window when most reflux and gas discomfort happens. It is not a sleep device. Always follow safe sleep guidance for actual sleep, which means placing your baby on their back on a firm, flat surface.
If reflux might be contributing to your baby's colic-like symptoms, our guides on baby reflux symptoms and silent reflux cover the specific patterns to look for.
Feeding adjustments that can help
For a minority of colicky babies, feeding adjustments make a meaningful difference. Try these.
Do not overfeed. The AAP recommends waiting at least 2 to 2.5 hours from the start of one feed to the start of the next. Overfeeding can create discomfort that adds to the colic picture.
Slow bottle feeds. For bottle-fed babies, a slower teat and paced feeding reduces the air swallowed and stretches the stomach less.
Burp thoroughly. Every feed. Halfway through and at the end. Trapped air is one of the more addressable colic contributors.
Watch mum's diet if breastfeeding. A small subset of colicky babies are sensitive to something in the breastfeeding mum's diet, most commonly dairy or caffeine. Before making significant dietary changes, talk to your pediatrician or a lactation consultant. Elimination diets should be structured and time-limited.
Talk to your pediatrician about formula. For formula-fed babies, a small subset (less than 5 percent) improve with a hydrolysed or hypoallergenic formula. This is a pediatrician decision, not a random experiment.
What NOT to do (common mistakes and myths)
A few things get repeated as colic remedies that are either unhelpful, unsafe, or scientifically weak.
Do not overhandle to the point of exhaustion. Some parents burn themselves out completely trying every technique for every crying spell. Not every crying spell can be soothed. Sometimes putting your baby down safely in the cot for 5 to 10 minutes while you take a break is the right move for both of you.
Do not shake a crying baby, ever. Shaken baby syndrome is real, catastrophic, and can happen in a moment of desperation with a crying baby. If you feel yourself losing control, put your baby down in the cot and walk away for a few minutes. This is the correct response, not a failure of parenting.
Do not use gripe water, colic drops, or "natural" remedies without your pediatrician's guidance. Many of these have thin or no evidence, and some contain ingredients that are not safe for very young babies. Talk to your doctor before giving your baby anything ingestible for colic.
Do not blame yourself. Colic is not caused by parenting anxiety, stress, or diet. Your baby is not "picking up" on your emotions in a way that causes hours of screaming.
Do not elevate the cot. Even if reflux is part of the picture. Elevation is not safe for infant sleep. Manage reflux during the day with upright positioning. Safe sleep on a flat surface at night.
Do not stop trying things too quickly. Give any single technique 5 to 10 minutes to work before moving on. Many parents cycle through 6 techniques in 15 minutes and never give any of them a chance to actually help.
When to see your doctor (the red flags)
Most colic does not need medical intervention. Certain signs warrant a same-week or same-day conversation with your pediatrician.
- Crying that starts before 2 weeks or continues past 4 months
- Fever (over 38 degrees Celsius / 100.4 Fahrenheit)
- Vomiting that is forceful, projectile, or contains bile (greenish)
- Blood in vomit or stool
- Poor weight gain or weight loss
- Refusing multiple feeds in a row
- Extreme lethargy in between crying spells
- Signs of dehydration (fewer wet nappies, sunken fontanelle, dry mouth)
- Difficulty breathing during or between episodes
- Anything that feels qualitatively different from "hard crying"
- A significant change in the crying pattern that is not improving
Your doctor can rule out reflux, milk protein allergy, ear infections, urinary tract infections, and other conditions that can mimic colic. If it is colic, they can offer reassurance about the timeline. If it is something else, catching it matters.
Managing yourself through it
The parent piece is the part most colic articles skip. It is also the most important.
Colic is genuinely traumatic. Weeks of unrelenting inconsolable crying wear down even the most patient adult. Postpartum exhaustion combined with colic is one of the highest risk factors for postpartum depression, postpartum anxiety, and relationship strain. Our post on postpartum exhaustion and how to actually recover covers the broader wellbeing picture.
Practical points for surviving the season:
Trade shifts if you have a partner. No one person should absorb all the evening crying. Split the witching hour. One parent does 5pm to 9pm one night, the other the next night. Or split each evening in half. The alternative is one person breaking.
Ask for specific help. Grandparents, friends, family. Not "let me know if you need anything" (nobody accepts that). Specific asks like "could you come Friday from 6 to 9pm so we can eat dinner and go for a walk?"
Put the baby down safely and step away when you need to. A crying baby in a safe cot for 10 minutes while you compose yourself is fine. It is genuinely better than a broken parent trying to soothe from a place of despair.
Do not compare yourself to other parents. Instagram-perfect babies are not real. Behind most calm feeds you see online is a family that also had a screaming baby for the previous 90 minutes.
Talk to your GP or health visitor if you are struggling. Postpartum mental health support exists and is highly effective. You do not have to prove you are "coping" to deserve help.
Remember: it ends. Most colic is gone by 12 to 16 weeks. Fully gone. Every week you get closer to the end.
The 5 S's method explained
The 5 S's is a colic soothing framework developed by pediatrician Harvey Karp. It is the most widely-recommended structured approach to soothing a crying baby.
- Swaddle. Wrap your baby snugly to contain the arms and reduce the startle reflex.
- Side or Stomach position. Hold your baby on their side or stomach against your body for soothing (NOT for sleep — sleep is always on the back).
- Shush. Loud, continuous white noise or shushing near the baby's ear. Match the volume to the crying, then reduce as they calm.
- Swing. Steady, small, fast rhythmic motion. Not big rocking movements. Small, fast, consistent.
- Suck. A pacifier, a finger, or the breast for non-nutritive sucking.
The 5 S's work best when combined. One or two rarely soothe a fully worked-up colicky baby. All five at once often will.
The Livvewell settling system was designed with this in mind. LullaWrap for the swaddle. LullaBear for the rhythmic motion (the "swing"). LullaHush for the continuous shushing sound. The system does not replace holding your baby, but it takes over the ongoing rhythm inputs so you can focus on the containment and the presence.
Free download: the Calm Baby Guide
We built a free 14-page guide for parents working through the daily reality of colic, fussiness, wake windows, and settling. Plain language, no fluff. You can download the Calm Baby Guide here, no purchase required.
Frequently asked questions
How long does colic last?
Most colic starts at 2 to 3 weeks, peaks at 6 to 8 weeks, and resolves by 12 to 16 weeks (3 to 4 months). Colic that continues past 4 months is worth investigating for other causes with your pediatrician.
Is colic caused by something I am doing?
No. Colic is not caused by parenting, feeding technique, breast milk composition (in almost all cases), parental stress, or anything you did or did not do. It is a developmental phase that a large fraction of babies go through, and its cause is not fully understood.
Should I try probiotics or gripe water?
Talk to your pediatrician before giving your baby anything ingestible. Some studies show modest benefit from specific probiotic strains for colic, but the evidence is mixed. Gripe water formulations vary widely and not all are safe for very young babies. This is a doctor decision, not a home decision.
Can I "spoil" my baby by holding them too much during colic?
No. You cannot spoil a baby in the first 4 months. Holding a colicky baby is one of the most effective interventions and it does not create bad habits.
My baby only cries in the evening. Is that colic?
Possibly. Evening-clustered crying (the witching hour) is a hallmark of colic. If it meets the Rule of 3s (3+ hours a day, 3+ days a week, 3+ weeks), colic is the working label. If it is shorter or less intense, it may be normal newborn fussiness.
Does colic mean my baby will have digestive issues later?
No. Colic in infancy does not predict later digestive problems, sensitivity, or personality traits. Colicky babies grow into perfectly typical toddlers and children.
Should I stop breastfeeding to try formula?
Almost never. Colic affects breastfed and formula-fed babies at roughly the same rates. Switching formulas or stopping breastfeeding rarely fixes colic and creates its own problems. Talk to your pediatrician before making feeding changes.
Is there any medication for colic?
Not really. There is no proven medication that reliably reduces colic. Some pediatricians will prescribe reflux medication if reflux is contributing. Beyond that, the best interventions are behavioural and environmental, not pharmacological.
Can colicky babies still sleep well?
Some do. Colic and sleep are two different systems. Many colicky babies sleep reasonably well overnight even when the evening crying is severe. If your baby is not sleeping well and has colic, the fixes are the same as for any baby: appropriate wake windows, calm wind-down, and a consistent sleep environment. Our wake windows by age guide covers timing.
The bottom line
Colic is one of the hardest experiences of new parenthood. It is also one of the most time-limited. Almost every case resolves fully by 4 months. Most parents look back and are astonished at how quickly it ended once the corner turned.
While you are in it, the most effective approach is a structured combination of techniques that recreate the sensory environment of the womb: swaddling, rhythmic motion, continuous sound, sucking, warmth, and safe containment. Any one of these alone often does not break through severe crying. All of them together, consistently, usually does.
You are not doing anything wrong. Your baby is not broken. This is not permanent. Do the things that help, take shifts with anyone available, ask for specific help, and give yourself permission to put your baby down safely and take a break when you need to.
Livvewell exists specifically for the parents in the middle of this. The tools were designed for exactly this scenario: 8pm on a Tuesday when nothing is working. You are not the only one. This ends. And you are doing better than you know.