Why is my baby crying? A guide to decoding different cries

The most common reasons babies cry

Most crying in the first months falls into one of six categories. Run through them in order when your baby starts crying:

• Hunger. The most frequent cause, especially under 3 months. Look for rooting (turning the head and opening the mouth), sucking on hands, or a building cry that starts softly and grows. Feed on demand; a newborn stomach empties in 2–3 hours.
• Tiredness and overtiredness. An overtired baby is harder to settle than a tired one. A whiny, rhythmic cry with eye-rubbing and yawning is the classic sign. Check the wake window: newborns can only manage 45–90 minutes awake before needing a nap.
• Wind and gas. Swallowed air during feeding builds pressure that is uncomfortable. The baby may pull the knees up to the chest, arch the back, or cry shortly after a feed. Burping mid-feed and switching to slower-flow bottle teats often helps.
• Discomfort. Check the basics: is anything pinching (a thread wrapped around a toe is a known cause of sudden intense crying)? Is the room too hot or too cold? Is the nappy wet or dirty? Is the baby dressed in something scratchy?
• Overstimulation. Too much noise, light, handling or activity can overwhelm a young baby's nervous system. The cry sounds fretful and the baby turns their head away from stimulation. A quiet, dim room and reduced handling usually helps within minutes.
• Desire for closeness. Babies are neurologically wired to expect contact — they spent nine months in a confined, warm space. Some crying simply stops when the baby is held, worn in a carrier, or rocked. This is normal and does not create "bad habits" in babies under 6 months.

How different cries sound — and what they mean

With time most parents develop an instinctive read of their baby's cries. Some broad patterns:

• Rhythmic, building cry — typically hunger. Gets louder and more urgent if ignored.
• Whiny, repetitive, lower-pitched — usually tiredness. Baby may also go floppy.
• Sharp, sudden onset, high-pitched — pain signal. Warrants a quick physical check and, if sustained, a call to the doctor.
• Fretful, on-and-off — often gas or overstimulation. Short cries interrupted by quiet moments.
• Evening cluster — peaks around 5–8 pm in babies under 3 months. The baby feeds frequently, is hard to settle, and may scream inconsolably for 1–3 hours before finally falling asleep. This is the "witching hour" and resolves on its own around 3–4 months.

Calming techniques that actually work

No single technique works for every baby or every cry. Try these in sequence:

• The 5 S's (Harvey Karp): Swaddle, Side/stomach position (while held — not for sleep), Shush (white noise at the level of a shower), Swing (gentle, jiggling motion), Suck (breast, bottle or dummy). Done together these mimic the womb environment and activate a calming reflex in most babies under 3 months.
• Skin-to-skin contact. Placing a crying baby on a bare chest regulates their temperature, heart rate and cortisol within minutes.
• Gentle motion. Walking, rocking, a car ride, or a vibrating bouncer can settle a crying baby quickly. The motion should be rhythmic and continuous.
• White noise. A consistent shushing sound (fan, white noise machine, or an app) at around 65–70 dB — louder than you might expect — replicates the sound level inside the womb.
• Change of environment. If nothing is working, simply stepping outside or moving to a different room can interrupt a crying cycle.

When to call the doctor

Most crying is normal. But some symptoms alongside crying warrant prompt medical attention:

• Fever above 38°C (100.4°F) in babies under 3 months — always call a doctor.
• Very high-pitched, unusual cry unlike the baby's normal crying pattern.
• Crying that has lasted more than 3 hours without any period of quiet.
• Refusing feeds for more than 6 hours.
• Any visible rash, difficulty breathing, or the baby appears floppy and unresponsive.
• You feel you cannot cope — parental exhaustion is real and there is no shame in asking for support.

This article is for general guidance and does not replace medical advice. If you are worried about your baby, contact your paediatrician or call emergency services.

Frequently asked questions

How do I know if my baby is crying from hunger or tiredness?

Hunger cries often start softly and build in intensity, accompanied by rooting, sucking on hands, or turning the head. Tiredness cries tend to be more whiny and rhythmic, and the baby will rub their eyes, yawn, or look away from stimulation. Checking the time since the last feed and last nap is the fastest triage step.

Is it okay to let a baby cry it out?

Leaving a newborn to cry it out is not recommended — young babies cannot self-regulate and crying is their only communication. For babies over 4–6 months, some graduated cry-it-out approaches (like the Ferber method) are considered safe by paediatricians, but any sleep training method should be discussed with your doctor first.

When should I call the doctor about my baby crying?

Call your doctor if the cry is very high-pitched and unusual, if crying lasts more than 3 hours, if your baby has a fever above 38°C, refuses feeds for more than 6 hours, or if you notice any rash, difficulty breathing, or unusual limpness.

Why does my baby cry more in the evening?

Evening fussiness — sometimes called the 'witching hour' — is very common in babies under 3 months. It is thought to be caused by accumulated overstimulation, a cluster-feeding drive, and general developmental tension that peaks in the late afternoon. It usually resolves by 3–4 months.

Related Guides

• Baby colic: causes, relief methods and when to call a doctor
• Baby Reflux and GERD: Symptoms, Causes, and What Actually Helps
• Separation Anxiety in Babies: When It Starts, How Long It Lasts and What Helps

Track feeds, sleep and notes with Bebblo

Logging the time of the last feed and nap makes cry-triage much faster. Bebblo records sleep, feeding and notes with a single tap — free, no mandatory account.

Core tracking is free. No account required.