Vagus nerve palsy
More common causes
Recurrent laryngeal nerve palsy
Lung cancer
Less common causes
Poliomyelitis
Intracranial mass
Motor neuron disease
Viral mononeuritis
Acute ischemic stroke
Amyotrophic lateral sclerosis
Lead poisoning
Multiple system atrophy
Thyroid carcinoma
Guillain-Barré syndrome
Cerebellopontine angle tumor
Uncommon causes
Syringobulbia
Botulism
Diphtheria
Brainstem lesion