How to Soothe a Colicky Baby

What It Is / Stage Overview

Colic is a term used to describe frequent, prolonged, and intense crying or fussiness in an otherwise healthy, well-fed infant. It is not a disease or a diagnosis but a pattern of behavior that can be extremely stressful for families. The classic definition—often called the “rule of three”—is crying for more than three hours a day, more than three days a week, for more than three weeks. However, many babies who cry less still have colic, and the intensity and duration can vary widely.

Colic typically begins around 2–3 weeks of age, peaks at about 6 weeks, and usually resolves on its own by 3–4 months. It affects up to 1 in 5 babies, equally in boys and girls, and in both breastfed and formula-fed infants. The crying often starts suddenly in the late afternoon or evening, and the baby may be difficult or impossible to soothe. It is important to know that colic is not a reflection of your parenting, and it is not your fault. This phase, while exhausting, is temporary and does not cause long-term harm to your baby.

You may also hear the term “Period of PURPLE Crying,” which is used by many healthcare providers to emphasize that this is a normal developmental stage. PURPLE stands for: Peak of crying, Unexpected, Resists soothing, Pain-like face, Long lasting, and Evening. Understanding this can help you reframe the experience and reduce feelings of guilt or frustration.

Typical Signs, Timeline, or Milestones

Colic crying has a distinct quality and pattern. While every baby is different, parents often notice the following signs:

• Intense, high-pitched crying that may sound like the baby is in pain.
• Predictable timing: Episodes often occur in the late afternoon or evening, though they can happen at any time.
• Physical signs: The baby may clench their fists, arch their back, pull their legs up toward the belly, or have a tense, hard abdomen. They may pass gas during or after crying.
• Inconsolability: The baby is difficult or impossible to soothe, even after feeding, changing, and cuddling.
• Normal growth and health: Despite the crying, the baby is gaining weight, feeding well, and has no signs of illness when examined by a doctor.

Timeline:

• Onset: Usually begins around 2–3 weeks of age.
• Peak: Crying typically increases and peaks at about 6 weeks.
• Resolution: Most babies outgrow colic by 3–4 months. Some may continue to have fussy periods, but the intense, inconsolable crying usually fades.

It is important to remember that these are averages. Some babies may start earlier or later, and the duration can vary. If your baby’s crying pattern does not fit this exact timeline but they are otherwise healthy, it may still be colic. However, always discuss any concerns with your pediatrician to rule out other causes.

Causes / Why It Happens

The exact cause of colic is not fully understood, and it is likely due to a combination of factors rather than a single issue. Researchers believe several elements may contribute:

• Immature digestive system: A newborn’s gut is still developing, which can lead to gas, bloating, or discomfort. Some babies may have trouble passing stool or coordinating bowel movements (a condition called infant dyschezia).
• Developing nervous system: Babies are born with an immature nervous system that can make them more sensitive to stimulation. They may become overstimulated by lights, sounds, or handling and have difficulty self-soothing.
• Gut microbiome: Some studies suggest that an imbalance of healthy bacteria in the intestines may play a role, though this is still being researched.
• Food sensitivities or allergies: In a small number of cases, colic may be linked to a sensitivity to cow’s milk protein (from formula or passed through breast milk) or other foods. This is not the cause for most babies.
• Parental stress or anxiety: While colic is not caused by parenting, a stressed or anxious caregiver can sometimes make it harder to soothe a baby. Babies are sensitive to the emotions around them, but this does not mean you are to blame.
• Temperament: Some babies are simply more intense or sensitive by nature, and colic may be an early expression of their temperament.

It is crucial to understand that colic is not a sign of illness or a reflection of your care. In most cases, no underlying medical problem is found. The crying is a normal, if challenging, part of early development for some infants.

What Parents Can Do

Soothing a colicky baby often requires patience, experimentation, and a toolkit of strategies. What works one day may not work the next, so it helps to have several options. Always ensure your baby’s basic needs are met first: check for hunger, a wet or dirty diaper, need for burping, or signs of being too hot or cold.

The 5 S’s: A Proven Soothing System

Developed by pediatrician Dr. Harvey Karp, the 5 S’s mimic the womb environment and can trigger a calming reflex in many babies:

1. Swaddling: Wrap your baby snugly in a thin blanket, arms down, to provide a sense of security. Stop swaddling once your baby shows signs of rolling over.
2. Side or Stomach Position: Hold your baby on their side or stomach while they are awake and you are supervising. This position can be soothing, but never place a baby to sleep on their stomach—always put them on their back for sleep.
3. Shushing: Make a loud “shhh” sound near your baby’s ear, or use white noise from a machine, app, or household appliance (like a vacuum or hair dryer). The volume should be about as loud as a shower.
4. Swinging: Use rhythmic, gentle motion—rocking, swaying, bouncing on an exercise ball, or a baby swing. Support the head and neck, and avoid vigorous shaking.
5. Sucking: Offer a pacifier, your clean finger, or the breast for non-nutritive sucking. Sucking is a powerful comfort mechanism.

Other Soothing Strategies

• Hold and carry your baby: Use a baby carrier or sling to keep your baby close while you move around. The warmth and motion can be calming.
• Go for a walk or car ride: The steady motion often helps babies fall asleep.
• Warm bath: A gentle bath can relax both of you, but not all babies enjoy it, so watch for cues.
• Tummy massage: With a little baby-safe oil, gently massage your baby’s belly in a clockwise direction to help move gas.
• Reduce stimulation: Dim the lights, lower noise, and swaddle to create a calm environment. Some babies need less, not more, input.
• Check feeding technique: If breastfeeding, ensure a good latch to reduce air swallowing. If bottle-feeding, try paced feeding and use a slow-flow nipple. Burp your baby frequently during feeds.
• Consider dietary changes (with medical guidance): If you suspect a food sensitivity, talk to your pediatrician. For breastfed babies, you might try eliminating cow’s milk, eggs, or other common allergens from your diet for a week or two to see if it helps. For formula-fed babies, your doctor may recommend a hydrolyzed or hypoallergenic formula. Never make major dietary changes without professional advice.
• Probiotics: Some research suggests that the probiotic Lactobacillus reuteri may reduce crying in some colicky breastfed babies, but evidence is mixed. Always ask your doctor before giving any supplement.

Taking Care of Yourself

Caring for a colicky baby is exhausting and can trigger feelings of frustration, anger, or sadness. It is okay to put your baby in a safe place, such as a crib, and step away for a few minutes to calm yourself. Never shake a baby—shaking can cause serious brain injury or death. Ask for help from your partner, family, or friends. Even a short break can make a difference. If you feel overwhelmed or depressed, reach out to your healthcare provider. You are not alone, and support is available.

When to Contact a Doctor / Red Flags

Colic itself is not a medical emergency, but it is essential to have your baby evaluated by a healthcare provider to rule out other causes of crying. Contact your pediatrician if you notice any of the following red flags:

• Fever: A rectal temperature of 100.4°F (38°C) or higher in a baby under 3 months is an emergency—seek immediate medical care.
• Vomiting or diarrhea: Especially if it is forceful (projectile) or contains blood or bile.
• Blood in the stool or stools that are black, white, or very hard.
• Poor weight gain or refusal to feed: If your baby is not gaining weight as expected or is feeding significantly less than usual.
• Lethargy or extreme sleepiness: If your baby is difficult to wake for feeds or seems unusually limp or unresponsive.
• High-pitched or weak cry: A cry that sounds different from usual, especially if it is shrill or very faint.
• Breathing difficulties: Rapid breathing, grunting, or flaring nostrils while crying or at rest.
• Signs of pain: If your baby seems to be in severe pain and cannot be comforted at all, or if you suspect an injury.
• You are afraid you might hurt your baby: If you feel like you might shake or harm your baby, put them in a safe place and call for help immediately. Contact a crisis hotline, your doctor, or a trusted person.

Also, schedule a non-urgent visit if colic symptoms persist beyond 4 months, if you are feeling depressed or overly anxious, or if you need support managing the stress. Your pediatrician can provide reassurance, rule out medical issues, and connect you with resources.

For any life-threatening emergency, call your local emergency services right away.

Common Myths or Misconceptions

• Myth: Colic is caused by gas or stomach pain.
  Fact: While gas can be a symptom, it is often a result of swallowing air during crying, not the root cause. Treating gas alone rarely resolves colic.
• Myth: Colic means something is seriously wrong with your baby.
  Fact: In the vast majority of cases, colic occurs in healthy, thriving infants. It is a temporary developmental phase, not a sign of illness.
• Myth: Changing formula or a breastfeeding mother’s diet will always fix colic.
  Fact: Only a small percentage of colic cases are related to food sensitivities. Dietary changes should be made under medical guidance and may not help.
• Myth: You can spoil a baby by responding to their cries.
  Fact: You cannot spoil a newborn. Responding promptly to cries builds trust and security. Colicky babies need extra comfort, not less.
• Myth: Colic is the same as reflux.
  Fact: Gastroesophageal reflux (GER) can cause crying and discomfort, but it is a distinct condition. Some babies have both, but colic is defined by the pattern of crying, not by spitting up.