Babies who cry often and for long periods of time are often diagnosed with colic.
Specifically, babies who cry at least three hours per day for more than three days a week for three or more weeks meet the criteria for colic. The term was coined by an American pediatrician over four decades ago. Some estimations say that somewhere between 20% and 40% of babies in Western cultures suffer from colic. One parenting expert, however, is saying that colic isn’t an ailment at all, and that there’s a way to stop babies from crying.