Idiopathic
Sarcoidosis of the spine is rare and can involve the cord, meninges, and bone. Clinically, neck or back pain with various neurological problems is observed. Cervical involvement is more common than thoracic or lumbar involvement.69Torticollis is involuntary contraction of neck muscles (dystonia), usually the sternocleidomastoid. It is mostly idiopathic, but it can be secondary to trauma, muscle inflammation, infection, antipsychotic drugs, or a tumor. Hereditary cases have also been described. It can be a sign of atlanto-axial rotatory subluxation in children. It needs to be differentiated from congenital torticollis due to obstetric trauma to the sternocleidomastoid.70