Pitfall of acquired ocular torticollis.

Following a posttraumatic concussion syndrome, a 24-year-old female presented at left clavicular fracture and dislocation with a compensatory head posture thought to be due to her sternocleidomastoid muscle involvement. Further investigation disclosed the existence of a concomitant superior oblique muscle palsy seemingly also of traumatic origin. The clinical course and the constellation of her symptoms are described.