Torticollis is a twisting of the neck that can have several causes. In newborns, it is often due to injuries during birth or fetal positioning, while in older children it may result from neck injuries, infections, or other conditions. The document discusses the main types and causes of torticollis, including congenital muscular torticollis in newborns, self-limiting torticollis, trauma, infections, tumors, and certain drugs. Ultrasound is often used to diagnose congenital cases in newborns, while CT and MRI are used to diagnose other causes like trauma, infections, or tumors in older children. Treatment depends on the underlying cause but may include stretching, physical therapy