Torticollis affects the ability to control neck muscles from contracting. This causes the head to turn and tilt to one side, and the chin to point to the opposite side. Sometimes one shoulder is lifted. The muscle contraction may be constant or may come and go.

The causes of torticollis are not well understood. Causes may include:

  • Genetic defect
  • Infant's position during pregnancy or delivery
  • Head or neck injury
  • Infection in neck muscles or bones
  • Damage or failure of the nervous system
  • Inner ear or eye problems
  • Deformities of the bones or muscles in the neck
  • Tumors of the head or neck
  • Arthritis of the neck
  • Use of certain medications