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It usually starts at the worst possible time – late afternoon, just when everyone is running on fumes. Your baby has been fed, changed, cuddled, burped, and checked over twice, but the crying keeps coming. If you are asking what is colic in babies, you are probably not looking for a textbook definition. You want to know whether this level of crying is normal, what might be causing it, and what you can actually do tonight.
Colic is a term used when an otherwise healthy baby cries a lot, often for long stretches, without a clear reason. It tends to show up in the first few weeks of life, often peaks around six weeks, and usually improves by the time a baby is three to four months old. It can feel relentless while you are in it, but it does pass.
What is colic in babies?
Colic is not an illness in itself. It is a pattern of frequent, intense crying in a young baby who is otherwise well. Traditionally, colic has been described as crying for more than three hours a day, on more than three days a week, for more than three weeks. Real life is not always that tidy, though. Many parents know something is off long before they have counted the hours.
A baby with colic may cry hard, go red in the face, clench their fists, draw up their knees, arch their back, or seem impossible to settle. The crying often happens in the evening, although it can happen at any time. Between episodes, many babies seem completely fine.
That last bit matters. Colic is frustrating and exhausting, but it usually happens in babies who are feeding, growing, and developing normally.
What colic looks like day to day
Colic crying is different from an ordinary grizzle. It tends to be louder, more intense, and harder to interrupt. You may go through every obvious fix – feed, wind, nappy, cuddle, swaddle, white noise, rocking – and still get nowhere.
Some babies seem gassy alongside the crying. They may pull their legs up, pass wind, or look uncomfortable after feeds. That is one reason people often assume colic is purely a tummy problem. Sometimes wind does seem to play a part, but not always. Colic is more complicated than that.
It can also be inconsistent. One evening may be manageable, and the next may feel impossible. That unpredictability is part of why parents can feel so unsettled.
Why does colic happen?
Here is the honest answer: doctors do not know exactly why some babies get colic and others do not. There are a few leading theories, and in some babies more than one factor may be involved.
One possibility is that a baby’s digestive system is still immature. Early feeding can come with more swallowed air, more wind, and more gut sensitivity. Another theory is that some babies are more sensitive to stimulation and struggle to settle after a busy day of lights, noise, handling, and normal household activity.
Feeding issues can also muddy the picture. A poor latch, fast let-down, overfeeding, underfeeding, reflux, or sensitivity to cow’s milk protein can all lead to distress that looks a lot like colic. That does not mean every crying baby has an allergy or reflux. It just means the label colic should not stop you from checking whether something else is going on.
This is where it helps to hold two thoughts at once: colic is common and usually harmless, but persistent crying still deserves attention.
Is it colic or something else?
If your baby is crying a lot, it is reasonable to wonder whether you are missing something. Sometimes a baby who seems colicky is actually hungry more often than expected, uncomfortable after feeds, constipated, unwell, or reacting to a feeding issue.
Signs it may be colic
Colic is more likely if your baby is under five months, has repeated crying spells that are hard to soothe, and seems well in between. They are usually feeding reasonably well, gaining weight, and do not have other worrying symptoms.
Signs to call a GP or seek urgent advice
Get medical advice if your baby has a fever, is vomiting forcefully, has green vomit, blood in the stool, poor weight gain, feeding problems, diarrhoea, a swollen tummy, breathing difficulties, or seems unusually sleepy or floppy. Also trust your instincts if the cry sounds different, your baby seems in pain, or something simply does not feel right.
Parents are sometimes told to just wait it out, but that can be unhelpful if your baby has symptoms that need a proper look. You are not overreacting by asking questions.
How to soothe a baby with colic
There is no one fix that works for every baby, which is deeply annoying when you are tired and just want a clear answer. Colic management is usually about reducing distress rather than curing it overnight.
Start with the basics. Check feeding positioning and latch if you are breastfeeding, or teat flow and bottle angle if you are bottle feeding. Burp your baby during and after feeds. Keep them upright for a short time after feeding if they seem uncomfortable.
Then think about overstimulation. Some babies settle better in a quiet, dim room with less noise and handling. Others respond to repetitive motion such as rocking, walking, a pram ride, or a drive in the car. White noise, a warm bath, or snug swaddling can help some babies, although swaddling should be done safely and not once a baby shows signs of rolling.
You do not need to try fifteen things at once. Pick one or two soothing strategies and use them consistently for a few days. Constantly switching approaches can leave everyone more wound up.
Feeding changes – helpful or overhyped?
This is where things can get messy. If your baby is formula fed and has signs that suggest cow’s milk protein allergy or another feeding issue, your GP or health visitor may suggest a trial of a different formula. If you are breastfeeding, there are situations where a short maternal diet change may be worth discussing with a professional.
But random feeding changes are not always useful. Cutting out foods or changing formula repeatedly without guidance can create more stress and may not solve the crying. If feeds seem linked to symptoms such as rash, blood in stools, frequent vomiting, eczema, or poor growth, get proper advice rather than guessing.
What about colic drops and remedies?
Some parents try anti-colic drops, probiotics, or gripe water. Evidence is mixed. A few babies seem to improve, but many do not. Some remedies are more about giving desperate adults something to try than about strong proof.
That does not mean you have failed if a product does nothing. It means colic is hard to treat. If you are thinking about using over-the-counter remedies, check they are suitable for your baby’s age and run them past a pharmacist, health visitor, or GP if you are unsure.
What to do when you are reaching your limit
Colic is not just a baby problem. It can hammer parental mental health, relationships, and confidence. Hours of crying can make even calm, capable adults feel panicky, angry, helpless, or numb.
If you are getting overwhelmed, put your baby down somewhere safe like a cot and step out of the room for a few minutes. Take a breath. Wash your face. Text someone. Ask your partner to tap in. If you are alone, call a family member, friend, or health professional for support.
What to say if you need help can be simple: “The crying is getting to me and I need a break.” You do not need to sound composed to deserve support.
Never shake a baby. If you feel close to snapping, distance yourself briefly and get another adult involved if possible. A crying baby is safer in a cot for five minutes than in the arms of someone who is at breaking point.
How long does colic last?
This is usually the question behind all the others. In most cases, colic improves on its own. It often starts around two to three weeks, peaks at about six weeks, and settles by three to four months. For some babies it eases earlier. For others it drags on a bit longer.
That timeline can feel insulting when you are in week five and each evening feels like a full shift. Still, there is value in knowing this phase is usually temporary. Your baby is not broken, and you are not doing parenting wrong.
When to trust yourself and ask again
If you have been told it is colic but your baby’s symptoms are changing, worsening, or not sitting right with you, go back and ask again. Parents often notice patterns before anyone else does. Maybe the crying is strongly linked to feeds. Maybe there is vomiting that is getting worse. Maybe the nappies have changed. Those details matter.
A useful approach is to keep a short diary for a few days – feeds, crying times, sleep, stools, vomiting, and anything that seems to help or make things worse. You do not need a perfect spreadsheet. Just enough to spot patterns and give clear information at an appointment.
Colic sits in that miserable category of problems that are common, usually harmless, and still genuinely hard. So if your baby cries for hours and you end the day doubting yourself, hear this clearly: needing help does not mean you are failing. Sometimes the most practical thing you can do is stop trying to be tougher than the situation and bring someone else in.
