Why is my baby crying

One reassuring measure first: according to the American Academy of Pediatrics, newborns routinely cry one to four hours a day, often with no apparent cause. A baby who cries a lot does not, on its own, mean you are doing something wrong.

Start with context

At three in the morning it is hard to weigh every possibility at once. Working down the list and meeting the most pressing need first is easier: warm them if they are cold, change the nappy if it is wet, then feed.

• How long since the last feed? Hunger is at the top of the list. By the rough ranges in feeding rhythm, gaps in a newborn are mostly 1.5 to 3.5 hours. The early hunger cues come before crying: rooting with an open mouth, a hand to the mouth, sucking sounds. Crying is a late cue, and a feed that starts mid-cry is harder to begin.
• How long awake? By the ranges in wake windows, a newborn tires after 30 to 70 minutes and a 3-6 month old after 1.5 to 2.5 hours. Past the window, crying turns sudden and hard to soothe; the back arches and the arms flail stiffly.
• The nappy. A wet or dirty nappy is on the NHS list of reasons babies cry. It takes seconds to check, so it is the quickest item to cross off.
• Too hot or too cold? Check the room and the layers. Avoiding overheating is also one of the safe-sleep rules in night sleep.
• Overstimulation, or boredom. Both are on the NHS list. When visitors, light, noise and screens have piled up, a dim, quiet room usually helps; for a baby who has been lying in the same spot for a long while, being picked up, carried around, talked to and sung to helps instead.
• Wanting to be held. Sometimes nothing is missing except closeness. A baby who settles the moment they are picked up probably wanted exactly that.
• Signs of discomfort or pain. Legs pulled up to the belly and stretched out stiffly, a red face and straining suggest wind; relief once it passes means that was probably it. If the cry has a shrieking, panicked quality, check whether a piece of clothing is pinching or a strand of hair has wrapped around a finger or toe. An unusual, high-pitched or weak cry is something else: that is not a care question but a doctor question.

All of these can be checked and measured. Agubu's cry analysis ranks the likely reasons from exactly this context, not from the sound — last feed, time awake, last nappy, age and time of day — and says so when it is not sure.

Why at night

As described in night sleep, a newborn does not tell night from day; the internal clock usually shows up between six and twelve weeks. Waking to feed is expected in the early months. Even between six and twelve months, a large share of babies still wake at least once a night.

Hard-to-soothe crying that clusters into the late afternoon and evening is a separate thing, and according to the NHS a very common one; it also lands at the hours when you are most tired. Nobody knows exactly why; the stimulation accumulated over the day, tiredness and the cluster feeding that tends to happen at those hours are the explanations offered. The amount babies cry tends to increase from around two weeks of age and reduces at around three months; in babies who fit the description of colic, the fussing usually stops by three to four months. More in colic.

Why after feeding

The first two things to check: swallowed air, and still being hungry. Babies take in air as they feed. Holding the baby upright during the feed, slowing the feed down, using a slower-flow teat on a bottle, and burping once partway through and once at the end can help. An honest note: in the small trial described in wind and burping, burping did not reduce crying. It is a useful habit, but skipping it breaks nothing.

A baby who wants to feed almost continuously through the evening and cries in between is usually not going hungry; cluster feeding passes within a few days. If the signs of getting enough listed in feeding rhythm, wet nappies and weight gain, are on track, the rhythm is fine.

Why while feeding

If the feed started mid-cry, the baby swallows more air and the latch is harder, which is why catching early hunger cues matters. Coming off the breast or bottle partway through and getting unsettled is a common sign of wind; a short burping pause is often enough. A strong milk flow or a fast-flowing teat means more air along with the milk; the American Academy of Pediatrics suggests trying a slower-flow teat and tipping the bottle to pause the flow for a few seconds now and then, so the baby can organise sucking and breathing and notice when they are full. If breastfeeding is painful or the latch keeps breaking down, a lactation consultant and your clinician can help.

Why in their sleep

In small babies a sleep cycle runs 45 to 60 minutes and ends with a brief surfacing toward wakefulness; the detail is in night sleep. You may hear fussing or a short cry then; it is not a full waking. A baby who fell asleep in arms or at the breast usually looks for the same conditions when they surface. Illness, teething, vaccination days and changes of routine produce the same picture. A few days of tracking shows whether a rough patch was temporary or something that stayed, from the record rather than from guesswork.

Why when I put them down

A baby who is calm in your arms and cries the moment they touch the mattress is not being difficult; they are reacting to a change. Arms are warm, curved and moving, and they carry your heartbeat and your smell. A flat, cool, still surface is the opposite of all that, and in the first months the startle reflex fires on the way down: the arms fling out, the baby jolts and wakes. It is one of the most common reasons for crying in the early months, and it eases on its own as the reflex fades, usually between three and six months.

• Wait for deep sleep. A baby who has just dropped off is still in light sleep for the first 10 to 20 minutes; loose, heavy limbs and slow, even breathing mean the deeper stage has arrived.
• Lower them feet first, keep a hand on their chest for a moment once they are down, then slide it out slowly.
• Warm the spot on the sheet with your palm beforehand rather than warming the room.
• Swaddle only before rolling begins and with the hips free; a steady low sound such as shushing or white noise covers the sudden silence of the room.
• For one sleep a day, try putting them down drowsy but awake, so the cot becomes a familiar place rather than a surprise.

The safe-sleep rules do not change because the baby protests: on their back, on their own flat surface, no soft bedding. If nothing works for a run of days, go back to the context list above first; a baby put down past the wake window or on an empty stomach is crying about that, not about the mattress. Logging sleep in Agubu shows the wake window closing, which makes the moment to put them down easier to pick.

Are there types of cries

Lists matching each cry sound to a cause are everywhere. The honest answer is that the research does not support them. A 2023 study in Communications Psychology recorded 24 babies in their homes through the first months of life: 39,201 cries in total, and among them 676 cry sequences with a known cause and adequate sound quality. The causes were labelled as discomfort, hunger and isolation. The result: neither trained adult listeners nor a machine-learning algorithm could reliably tell the causes apart. The sound reliably carries who the baby is and how old they are; on its own, it does not carry why they are crying. Our own measurement in why a cry cannot be decoded reached the same conclusion: whether a sound is a cry can be heard, why cannot.

As you get to know your baby you may sense from the intensity of the cry how distressed they are; that is real, and the study accepts that cries carry distress levels. But what says why they are crying is not the sound itself, it is the context at that moment. The reassuring part: you are not misreading the sound; it does not carry that information.

Dunstan Baby Language and the "five types of cry" lists

The list you will meet most often is Dunstan Baby Language: according to the method Priscilla Dunstan popularised on television in 2006, newborns make five sounds just before crying; "neh" for hunger, "owh" for tiredness, "eh" for a burp, "eairh" for wind, "heh" for discomfort. Most "learn your baby's crying language" articles and some apps rest on this list.

The honest position: the method has never been put through rigorous independent testing. The studies that exist either show that a computer can tell the five sounds apart (the labels come from the method itself; that does not show the sound actually carries hunger) or that mothers who learned the method felt less stressed. The 2023 study that examined 39,201 cries recorded at home from 24 babies found that the sound carries only age and identity; neither listeners nor an algorithm could tell the reason.

Use these lists as a reminder, not a dictionary: there is no such sound as a "hunger cry", but there are early hunger cues (hand to mouth, rooting) and the time since the last feed. The one thing the sound reliably tells you is how distressed your baby is; the reason comes from context.

What usually helps

None of it works for every baby or every time; the NHS says the same, that some ways work better than others. That is not failure, it is early infancy. Widely tried:

• Holding them close in your arms or a sling; walking, rocking, a walk with the pram or a drive: continuous, monotonous movement
• Gently stroking their back, talking, singing
• A steady low-level background sound: white noise, a radio, shushing. Kept low and away from the baby; the detail is in white noise
• Safe swaddling: only before the baby starts rolling, and with the hips free to move
• Letting them suckle at the breast if you are breastfeeding
• Slowing the feed down, pausing to burp
• Dimming the lights, fewer visitors, screens off
• A warm bath: it calms some babies instantly and makes others cry even more

Anti-colic drops, herbal and probiotic remedies: the NHS does not recommend them, and the American Academy of Pediatrics says research has never shown them to work. Do not give them without asking your doctor first.

The most important point: when you cannot take any more, put the baby down on their back in their cot or pram, make sure they are safe, close the door and go into another room. Set yourself a time limit, ten minutes say, then go back. Nothing happens to a baby who is crying but lying safely; something does happen to a baby who is shaken: shaking can cause brain damage, blindness and death. Even in healthy babies, long crying is one of the things that wears parents down most, and shaken-baby prevention programmes exist for exactly that reason. If you are on your own and reaching that point often, ask someone close to you, your doctor or a nurse for help.

When to see a doctor

If anything on this list is true, leave the context list and contact a clinician:

• Crying goes on for more than 3 hours and nothing settles it
• There is fever, vomiting or a rash
• You hear an unusual, high-pitched or weak cry
• Your baby refuses to feed altogether
• Crying that fits the description of colic is still going on after four months, or your baby is not gaining weight as expected
• Your instinct tells you something is wrong

Difficulty breathing, blue or grey lips or skin, a baby who cannot be woken, or no wet nappy for eight hours are emergency signs. In an emergency, call your local emergency number.

Sources

This article draws on the general guidance of the sources below. It contains no quoted text. The age-based ranges and figures come from these articles on this site, each with its own source list: wake windows, feeding rhythm, night sleep, wind and burping, why a cry cannot be decoded.

• NHS (UK) — Soothing a crying baby — reasons babies cry, ways to soothe, putting the baby down safely and taking a break, the rise in crying from two weeks and fall by three months, emergency signs
• NHS (UK) — Colic — the rule of threes, evening clustering, upright feeding and winding, no evidence for drops, a weak or high-pitched cry as an emergency
• American Academy of Pediatrics, HealthyChildren.org — Responding to your baby's cries — one to four hours of crying a day, meeting the most pressing need first, soothing techniques, slower-flow teats, gas drops, the harm of shaking
• National Center on Shaken Baby Syndrome — The Period of PURPLE Crying — the frustrating features of long crying in healthy babies, and shaking prevention
• Lockhart-Bouron et al., *Communications Psychology*, 2023 — infant cries convey age and identity, not cause — 24 babies, 39,201 cries, 676 cry sequences with a labelled cause