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Lateral Medullary Syndrome (Wallenberg Syndrome)


Lateral medullary syndrome is a neurological disorder causing a range of symptoms due to ischemia in the lateral part of the medulla oblongata in the brainstem. The ischemia is a result of a blockage in the posterior inferior cerebellar artery or one of its branches.

Signs & Symptoms

SIDEMANIFESTATIONCOMMENTS
Ipsilateral Sensory loss – face – pain and temperature CN 5 nucleus
Ipsilateral Facial pain CN 5 nucleus
Ipsilateral Ataxia – arm and leg Restiform body, cerebellum
Ipsilateral Gait ataxia Restiform body, cerebellum
Ipsilateral Nystagmus Vestibular nucleus
Ipsilateral Nausea / vomiting Vestibular nucleus
Ipsilateral Vertigo Vestibular nucleus
Ipsilateral Horseness Nucleus ambiguus
Ipsilateral Dysphagia Nucleus ambiguus
Ipsilateral Horner syndrome Descending sympathetics
Contralateral Hemisensory loss – pain and temperature Spinothalamic tract
Neither Hiccups