What are the main clinical features of Lateral medullary syndrome?

Cerebellar features

• ataxia
• nystagmus

Brainstem features

• ipsilateral: dysphagia, facial numbness, cranial nerve palsy e.g. Horner's
• contralateral: limb sensory loss

What is the pathophysiology of Lateral medullary syndrome?

occurs following occlusion of the posterior inferior cerebellar artery

What is non-eponymous name of Wallenberg's syndrome?

Lateral medullary syndrome