Colic

Colic is an extreme type of crying in a baby between 3 weeks and 3 months of age. All babies cry, but a colicky baby will cry for hours at a time, no matter what you do.

During a crying episode, a colicky baby may cry loudly and continuously and be hard to comfort. The baby may get red in the face, clench the fists, and arch his or her back or pull the legs up to the belly.