Colic is when a healthy infant cries often, long and hard or is very fussy.
The colic in babies often starts around 3 weeks and goes away within 3 to 4 moths.
Symptoms of colic include arched back, clenched fists and tensed belly, which often occurs in the evening, although the exact cause of colic is not known.
Although theories suggest overstimulation, digestive sensitivity, or immature nervous systems can be causes of colic.
There's no cure for colic in babies, although soothing techniques like rocking, warm baths, swaddling or checking the baby for hunger, or dirty diapers can help.