Torticollis is a fixed or dynamic tilt, rotation, or flexion of the head and/or neck. The type of torticollis can be described depending on the positions of head and neck.

• laterocollis : the head is tipped toward the shoulder
• rotational torticollis : the head rotates along the longitudal axis
• anterocollis : forward flexion of the head and neck
• retrocollis : hyperextension of head and neck backward

A combination of these movements often may be observed.

Source:  Wikipedia