Related DDx ⬇
Etiology ⬆
- Pancoast tumor (lung cancer)
- Neck trauma or tumor
- Lung abscess or tuberculoma
- Internal carotid dissection
- Brainstem infarct (Wallenberg or lateral medullary syndrome)
- Demyelinating disease, eg, multiple sclerosis
- Syringomyelia
- Cluster headache
- Substernal goiter