No one really knows what causes colic. Maybe that is because any time a baby cries it is often blamed on colic. But the facts about colic are:
- Colic often begins when a baby is three weeks old, peaks when he is six weeks old, and is typically gone by about three months.
- Babies with colic often cry for about two or three hours a day, at about the same time each day, often in the early evening.