The effect of chiropractic treatment on infantile colic needs to be investigated since this is a very common disorder with no known effective treatment but with good empirical evidence of the value of chiropractic treatment. Although it is usually considered to be a benign and self-limiting condition, some studies suggest there might be long-term effects in terms of psychomotor problems. In worst case, the infants' crying may also lead to violence and 'shaken baby syndrome'.