II. Causes

  1. Acute Sinusitis
  2. Otitis Media
  3. Otitis Externa
  4. Ophthalmologic abnormality (e.g. Glaucoma)
  5. Temporomandibular Joint Dysfunction (TMJ)
  6. Occipital defect
    1. Platybasia
    2. Chiari Malformation
    3. Klippel-Feil Syndrome

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