Lateral medullary syndrome (Wallenburg) syndrome

Another favourite question in part 1....

- PICA (posterior inferior cerebellar artery) thrombosis

Signs of wallenburg syndrome
- Ipsilateral

• nystagmus (vestibular nuclei)
• cebebellar ataxia (inferior cerebellar peduncle)
• palatal / pharyngeal / vocal cord paralysis (IX, X nerve nuclei)
• facial numbness (nucleus V)
• Horner's syndrome (descending sympathetic fibers)
• loss of taste (tractus solitarius)

- Contralateral

• loss of pain and temperature (spinothalamic tract)

Notes:

- NO motor weakness

- crossed findings of loss of pain and temperature sensation on ipsilateral face and contralateral body