• A symptom, not a disease, of a twisted neck. In most instances, the head is tipped toward one side and the chin rotated toward the other. The involuntary muscle contractions in the neck region of patients with torticollis can be due to congenital defects, trauma, inflammation, tumors, and neurological or other factors.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• Contracted state of the cervical muscles, producing twisting of the neck and an unnatural position of the head.
  CRISP Thesaurus
  National Institutes of Health, 2006
• Involuntary contractions of the neck musculature resulting in an abnormal posture of or abnormal movements of the head.
  Human Phenotype Ontology (HPO)
  The Human Phenotype Ontology Project, 2021
• Torticollis is the common term for various conditions of head and neck dystonia, which display specific variations in head movements (phasic components) characterized by the direction of movement (horizontal, as if to say
  Medscape
  WebMD, 2019
• Torticollis, abnormality in which the neck is in a twisted, bent position such that the head is pulled to one side and the chin points to the other. In infants the most common causes of torticollis include congenital shortening of muscles on one side of the neck, malposition of the fetus in the...
  Encyclopedia Britannica
  Encyclopedia Britannica, Inc., 2020