Why Babies Cry: Normal Crying, Colic, and Coping Safely

Crying is a newborn's only real language, and there's a wide range of what's ordinary. Knowing where that range sits — and having a genuine plan for the moments it pushes past what you can handle — matters for both of you.

How much crying is normal

Newborns routinely cry one to four hours a day; it's how they call for help, block out overstimulation, and release tension ². Crying tends to follow a predictable arc that the Period of PURPLE Crying program describes with the acronym PURPLE: it begins around two weeks of age, Peaks in the second month, is often Unexpected, Resists soothing, can come with a Pain-like face even when nothing hurts, Lasts a long time, and clusters in the Evening ¹. It generally eases by three to five months.

The single most useful thing about that curve is that it is a *curve*. Crying that increases week over week through the first two months isn't a sign that you're getting worse at this — it's the expected shape, and the peak is followed by a decline. Most parents hit their lowest point at six to eight weeks, which is exactly when the curve tops out.

Work through the checkable causes first

Before concluding a cry is unexplained, run the short list. It resolves a good proportion of crying and takes two minutes:

• Hungry, or wanting to suck for comfort

• Wet or soiled diaper

• Too hot or too cold — check the chest or back of the neck, not hands or feet

• Tired and needing help winding down

• Overstimulated — too much noise, light, or handling

• Wanting contact, which is a genuine need rather than a habit

• Something physical: a hair wrapped tightly around a finger or toe, a scratchy tag, a trapped burp

If none of those apply and your baby is otherwise well, you have most likely arrived at normal unexplained crying — which is a real category, not a failure of investigation.

Colic

About one in five babies cries enough to be called colicky ³. The AAP's definition tracks the "rule of three": crying for more than three hours a day, more than three days a week, for more than a week, typically starting between two and four weeks of age and resolving by three to four months ³. The exact cause isn't well understood.

What is well established: the NHS states plainly that anti-colic drops, herbal remedies, and probiotic supplements haven't been shown to help, and neither has spinal manipulation or cranial osteopathy ⁴.

That's worth sitting with, because colic is a large and profitable market aimed at exhausted people. The absence of an effective product is not a gap in your research — it reflects that colic resolves on its own and nothing sold for it has been shown to speed that up.

Soothing techniques worth trying

• Swaddling

• Rhythmic motion — rocking, gentle bouncing, a stroller or car ride

• White noise or other steady, calming sound

• Holding your baby upright, or across your forearm in a gentle "colic hold"

• A pacifier

• A warm bath

• Feeding upright to reduce swallowed air, and burping regularly

• Skin-to-skin contact, which settles some babies when nothing else does

• Going outside — a change of air and light interrupts an escalation surprisingly often

Give each one a couple of minutes before switching. Cycling rapidly through six techniques adds stimulation to a baby who is often already overstimulated.

When you feel like you can't take any more

This is the part that gets skipped in a lot of crying advice, and it shouldn't be. Overwhelming, inconsolable crying is exactly the situation where the risk of shaking a baby goes up — a real and serious danger, not a hypothetical one.

Two things worth doing before you reach that point rather than during it.

Make the plan concrete now. Decide where you will put your baby down, who you will call, and what you will do for ten minutes. A plan made calmly at 2pm is one you can actually execute at 2am.

Brief everyone who cares for your baby. The elevated-risk period coincides with when other people start helping — partners, grandparents, new childcare. Anyone who might be alone with your baby during a long cry should know the curve is normal, that putting a baby down safely is the right move, and that they will not be judged for doing it.

When crying is telling you something medical

Normal crying is loud, builds, and responds at least sometimes to comfort. A few patterns are different and deserve a call rather than more soothing:

• A high-pitched, weak or unusual cry, quite unlike your baby's normal one

• Crying with fever, vomiting, or a rash

• Crying paired with poor feeding, fewer wet diapers, or unusual sleepiness

• A sudden change to inconsolable crying in a baby who was previously settling

• Crying that comes in sharp intermittent bouts with pulling the legs up, especially with unusual stools

• Crying accompanied by a swollen abdomen or a bulge in the groin

Reflux, cow's milk protein allergy, an ear infection and a hair tourniquet are all treatable causes worth ruling out if crying is severe and persistent.

Sources