Colic is still a bit of a mystery, but most experts think it's tied to a baby's immature digestive system and sensitivity to stimulation. The signs usually go beyond normal fussiness—colicky babies cry for more than three hours a day, several days a week, often at the same time in the evening. Treatment isn't about a cure so much as soothing: gentle rocking, white noise, or trying smaller, more frequent feeds can help. For parents, it's important to remember you're not doing anything wrong. Take breaks, ask for help, and know the crying will pass as your baby grows.