“…Less common etiologies include cervical adenitis, osteomyelitis, tuberculosis, and upper lobe pneumonia. Tumors, ophthalmological problems, and central nervous system infections should also be considered, as well as Grisel's syndrome, nontraumatic subluxation of the atlantoaxial joint caused by inflammation of the adjacent tissues, and Chiari 1 malformation, that are rare but possible cause of headache, opisthotonus, and neck pain in children [1, 2, 5, 6]. Accurate differential diagnosis is required to correctly identify the cause and choose the right treatment.…”