What is colic?All babies cry, but sometimes a baby will cry for hours at a time, no matter what you do. This extreme type of crying in a baby between 3 weeks and 3 months of age is called colic. While it is upsetting for parents and caregivers, colic is normal for some babies. Doctors usually diagnose colic when a healthy baby cries harder than expected in a “3” pattern: more than 3 hours a da