<prompt> Secondary toicollis may develop as a result of all the following exceptSkin scarring usually following burnsVeebral injuriesProlapsed interveebral discSacroiliitis  <response>: Other causes of secondary toicolis are tuberculosis, pyogenic infection, ankylosing spondylitis, osteoid osteoma, intraspinal tumours, intracranial tumours of the posterior fossa etc. 