Complications associated with the vagus nerve may have different symptoms depending on the location of the affected nerve (Bunch et al., 2008; Sibilla etal., 2017). You may experience:

• Supranuclear lesions:
  • moderate to severe dysarthria and dysphonia (depending on severity, pseudobulbar palsy may develop).
• Medullary lesions:
  • stroke
  • inflammatory/demyelinating diseases
  • dysarthria and dysphonia without contralateral hemiparesis
  • bradycardia
  • hypotension sudden decreases in skin temperature
  • vasovagal syncope
• Extracranial lesions:
  • increased sympathetic activity
  • hoarseness due to laryngeal muscle paralysis
  • inspiratory stridor
  • dysphonia to complete aphonia
• Gastroparesis and pyloric spasm:
  • abdominal bloating
  • pain
  • nausea
  • early or easy satiety
  • weight loss
• Acid reflux (gastroesophageal reflux disease, GERD)
• Changes to heart rate, blood pressure or blood sugar
• Difficulty swallowing or loss of gag reflex
• Dizziness or fainting

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