Why Babies Cry: 11 Reasons to Know So You Can Worry Less

You've checked their diaper, rocked them gently, and yet, your baby's still crying. What else is going on? Understanding why babies cry can help you pick up on what they're feeling and what they need. Most of the time, it's something simple, but in some cases, frequent or unusual crying could be a sign of something more serious.

Here's a breakdown of the most common needs your baby is trying to communicate.

1. They’re Hungry.

Your baby’s tiny tummy means they get hungry often but can only take in small amounts at a time. Pay attention to early hunger cues like rooting (turning their head to search for the nipple), smacking their lips, or sucking on their fingers.

2. They Need a Diaper Change.

A wet or soiled diaper can quickly irritate your baby’s sensitive skin, making it a top reason for tears. Check their diaper regularly, especially after feedings and naps, to help keep them comfortable and happy.

3. They Need to Burp.

Babies often swallow air during feedings, which can cause uncomfortable pressure in their stomachs and lead to tears. You can help relieve gas in infants by burping your baby during and after each feeding. Try different positions, like holding them over your shoulder or sitting them upright on your lap while gently patting their back.

4. They Have Colic.

If your baby cries intensely for three or more hours a day, at least three days a week, for several weeks, they may have colic. While its cause is unknown, a 2019 study in Pediatric Research found that a colicky cry sounds identical to a cry from genuine pain, making it a stressful experience for both you and your baby.

While gentle massages or holding your baby upright can sometimes help, it's important to talk with your pediatrician if you suspect colic.

5. They Feel Too Hot or Too Cold.

Babies can’t regulate their body temperature as well as adults can, so they often cry from being too hot or too cold. To check, feel the back of their neck or tummy—not their hands or feet, which are usually cooler.

If your child has flushed skin or a sweaty chest, they may need a layer of clothing removed. If they’re less active, they may need a layer added.

6. They Feel Overstimulated.
 

When your baby is overstimulated, a snug swaddle and white noise can recreate the womb-like sensations they find secure.

Bright lights, loud noises, and being passed around to admiring family members can be too much for your little one, leading to fussy, inconsolable cries. If they’re overstimulated, take them to a quiet, dim room to calm down. A snug swaddle or white noise can also help.

7. They're Overtired and Need Sleep.

An overtired baby often gets fussy instead of sleepy. Watch for tired cues, such as yawning, rubbing their eyes, staring into space, or pulling on their ears. Responding to these first quiet signals is the best way to help your baby wind down for sleep before a meltdown begins.

8. They're Going Through a Sleep Regression.

If your baby is suddenly much fussier and crying more at night, you may be dealing with a sleep regression. The Sleep Foundation explains that regressions are temporary phases tied to major developmental leaps, such as learning to walk or talk, experiencing growth spurts, teething, or the formation of new sleep cycles.

While regressions can be challenging, the extra crying is a sign of your baby's busy, developing brain and typically passes within a few weeks.

9. They're Teething.

Teething pain can start as early as four months, even if you don't see a tooth for a while. Drooling, irritability, and a desire to chew on everything are common signs. You can offer relief by giving them a chilled (not frozen) teething toy or gently massaging their gums with a clean finger.

10. They Might Be Sick.

If your baby’s crying sounds different than usual—perhaps weaker or more high-pitched—and is accompanied by other symptoms like a fever, rash, vomiting, or a refusal to eat, it could be a sign of illness. Trust your instincts. If you feel something is wrong, don’t hesitate to contact your pediatrician.

11. They Just Need Mom or Dad.

A warm cuddle may be just what your baby needs. This closeness isn't spoiling them; it's building trust.

Sometimes, a cry simply means your baby needs you. Answering this call for comfort with a cuddle or skin-to-skin contact isn't spoiling them—it's building security.

Global health experts at UNICEF confirm you can't spoil a baby with too much closeness. In fact, a 2020 study in Early Human Development found that immediate skin-to-skin contact after birth acts as a protective buffer for their emotional development, creating a strong foundation of trust.

FAQs About Why Babies Cry

How can I calm a baby who won’t stop crying?

When nothing seems to work, you can try the "5 S's" by pediatrician Harvey Karp to help soothe your baby.

• Swaddle: Wrap your baby snugly.
• Side or stomach position: Hold them on their side or stomach across your arm. You can place them on their back once they’re asleep.
• Shush: Make a loud, continuous "shushing" sound.
• Swing: Gently rock or sway them.
• Suck: Offer a pacifier or a clean finger.

Why do babies cry at night?

Many babies cry more at night due to the day's events catching up with them, leading to them being overtired or overstimulated. It can also be a time when discomfort from gas or symptoms of colic seem to peak.

You might notice your baby crying while sleeping, too, as they transition between sleep cycles.

When should I call a doctor about my baby’s crying?

Contact your pediatrician if the crying is inconsolable for hours, if it’s accompanied by a fever, rash, vomiting, or changes in stool, or if your parental intuition tells you something isn’t right.

What should I do if I'm feeling overwhelmed?

Trying to calm a crying baby can be incredibly stressful, and it's okay to feel overwhelmed. Your well-being matters, too. That's why health organizations like UNICEF give this crucial advice: if you're feeling frustrated, place your baby safely in their crib, walk into another room, and take a few minutes to breathe and recenter yourself.

Learning why babies cry is a skill you develop over time. Pay close attention to their different sounds and body language to understand what they're communicating. Every cry you answer doesn't just solve a problem—it teaches your baby they are safe, understood, and can count on you.

Connect with other parents on the ParentTeam Moms and Dads Facebook group and share your tips for figuring out why babies cry!