Symptoms and Causes of Colic

Colic in infants is one of the most upsetting features of early infant life. Affecting from a third to a fifth of all babies, it is characterized by the occurrence of frequent and unexplained episodes of excessive crying, which start around the same time on almost every day, and last for three hours or more. It may last from weeks to months, but usually subsides without specific treatment. Colic is found to occur equally in bottle-fed and breast-fed infants.

The most common age for colic in babies is between 2 and 16 weeks. Almost invariably it is a thing of the past by the time the infant turns six months. Most frequently it occurs in the mornings or evenings, and seems to be associated with abdominal pain. The frustrating part of colic is that the baby is not comforted or soothed by cuddling or distraction. Colic can cause a lot of stress to build up in the caregivers, and this may in turn lead to it becoming harder to deal with the crying baby.

Colic starts between the ages of 2 and 4 weeks and its peak incidence has been found to occur between 6 and 8 weeks.

Symptoms

The baby usually starts to cry each day in the evening or late afternoon. Until this time, the baby may sleep or play quite normally without any signs of discomfort or stress. Crying may be accompanied by any of the following symptoms:

  • Grimaces or angry frowns
  • Flushing of the face
  • Clenching the fists
  • Arching the back, or pulling up the legs, which leads people to suppose that it is due to a bellyache
  • Prolonged loud uncontrolled crying lasting for at least 3 hours
  • Audible rumblings of the intestines
  • Failure of all efforts to console the infant
  • Sometimes, the baby may pass abdominal gas or feces
  • The baby recovers spontaneously and usually goes to sleep or nurses peacefully

It is important to note that despite the regular crying outbursts that occur, the infant appears calm and well at other times, feeds properly and gains weight regularly in an age-appropriate manner. Moreover, the infant gets over the colic spontaneously, which has been attributed to neurodevelopmental maturation.

What causes Colic?

The actual reason for the crying in colicky babies is as yet unknown, despite much research. The following theories have been offered to explain it:

  • Hunger
  • Abdominal distension by gas and consequent pain
  • Being constantly overfed may lead to feelings of uncomfortable fullness
  • Intolerance of certain proteins in milk or formula leading to bowel irritability or indigestion
  • Hyper-sensitive faculties which pick up signals alarming to the child
  • Over-excitement, fear or frustration
  • Indigestion
  • Substances in the mother’s diet which are not tolerated by the baby, such as cabbage or broccoli, onions, chocolate, or even cow’s milk
  • Maternal ingestion of nicotine (such as by smoking) or caffeine which stimulate the infant too much
  • Immaturity of the infant’s emotional and mental processing of the unfamiliar environment outside the womb, which leads to hyper-reaction to normal stimuli

References

Further Reading

Last Updated: Dec 30, 2022

Dr. Liji Thomas

Written by

Dr. Liji Thomas

Dr. Liji Thomas is an OB-GYN, who graduated from the Government Medical College, University of Calicut, Kerala, in 2001. Liji practiced as a full-time consultant in obstetrics/gynecology in a private hospital for a few years following her graduation. She has counseled hundreds of patients facing issues from pregnancy-related problems and infertility, and has been in charge of over 2,000 deliveries, striving always to achieve a normal delivery rather than operative.

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