Almost all infants develop periods of fussiness. This is often referred to as colic. It has been defined as periods of irritability, fussiness and inconsolable crying in a healthy baby (that lasts for at least three hours a day, at least three days a week). But colic is actually a default diagnosis.

Pain from sources other than the gastrointestinal tract can be improperly diagnosed as colic. If a baby is crying inconsolably, it is very difficult to know if he is actually suffering from a digestive disturbance. Since many subluxations in infants are in the upper cervical area, there is a strong possibility, especially when there has been a history of birth trauma, that these babies are suffering from head and neck pain due to spinal subluxations in this area.