Congenital Muscular Torticollis (Clinical Presentation)

7.3-year-old boy in whom the part of the left sternocleidomastoid muscle close to the sternum is better visible than the part of the involved right muscle. Looking closely at the face, the horizontal axis of the lid edges diverges from the horizontal axis of the mouth angles on the left side; therefore, the left side of the face is higher than its right side. The cause of this torticollis is congenital muscular torticollis.